/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: #e0e0e0;
    background: #0a0a1a;
    line-height: 1.7;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color 0.3s; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }

/* ===== Utility ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #ff0013, #ff6b35);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.section-subtitle {
    text-align: center;
    color: #8a8a9a;
    font-size: 1.1rem;
    margin-bottom: 48px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}
.btn-primary {
    display: inline-block;
    padding: 14px 36px;
    background: linear-gradient(135deg, #ff0013, #ff4d2d);
    color: #fff;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: transform 0.3s, box-shadow 0.3s;
    border: none;
    cursor: pointer;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255, 0, 19, 0.35);
    color: #fff;
}
.btn-outline {
    display: inline-block;
    padding: 12px 32px;
    border: 2px solid #ff0013;
    color: #ff0013;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s;
}
.btn-outline:hover {
    background: #ff0013;
    color: #fff;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 10, 26, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: background 0.3s;
}
.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.nav-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.5px;
}
.nav-logo span { color: #ff0013; }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: #b0b0c0;
    transition: color 0.3s;
    position: relative;
}
.nav-links a:hover { color: #fff; }
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: #ff0013;
    transition: width 0.3s;
}
.nav-links a:hover::after { width: 100%; }
.nav-cta {
    padding: 10px 24px !important;
    background: linear-gradient(135deg, #ff0013, #ff4d2d) !important;
    color: #fff !important;
    border-radius: 50px;
    font-weight: 600 !important;
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { box-shadow: 0 4px 20px rgba(255, 0, 19, 0.4); }

/* Mobile Menu Toggle */
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: #fff; border-radius: 2px; }

/* ===== Hero ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 72px;
    background: radial-gradient(ellipse at 20% 50%, rgba(255, 0, 19, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 20%, rgba(59, 130, 246, 0.06) 0%, transparent 50%),
                #0a0a1a;
}
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255, 0, 19, 0.05) 0%, transparent 70%);
    border-radius: 50%;
}
.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
    position: relative;
    z-index: 1;
}
.hero-content { flex: 1; max-width: 600px; }
.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(255, 0, 19, 0.1);
    border: 1px solid rgba(255, 0, 19, 0.3);
    border-radius: 50px;
    font-size: 0.85rem;
    color: #ff6b35;
    margin-bottom: 24px;
    font-weight: 500;
}
.hero h1 {
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.15;
    color: #fff;
    margin-bottom: 20px;
}
.hero h1 .highlight {
    background: linear-gradient(135deg, #ff0013, #ff6b35);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero p {
    font-size: 1.15rem;
    color: #8a8a9a;
    margin-bottom: 36px;
    line-height: 1.8;
}
.hero-actions { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.hero-qr {
    flex-shrink: 0;
    width: 280px;
    height: 280px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 20px;
}
.hero-qr-inner {
    width: 180px;
    height: 180px;
    background: #fff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #0a0a1a;
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 12px;
}
.hero-qr p { color: #8a8a9a; font-size: 0.85rem; }

/* ===== Stats ===== */
.stats {
    padding: 60px 0;
    background: rgba(255, 255, 255, 0.02);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}
.stat-item { padding: 24px; }
.stat-number {
    font-size: 2.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, #ff0013, #ff6b35);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}
.stat-label { color: #8a8a9a; font-size: 0.95rem; }
.stat-icon {
    font-size: 2rem;
    margin-bottom: 12px;
    display: block;
}

/* ===== Features ===== */
.features { background: #0a0a1a; }
.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}
.feature-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    padding: 36px;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 0, 19, 0.2);
}
.feature-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(255, 0, 19, 0.15), rgba(255, 107, 53, 0.1));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin-bottom: 20px;
}
.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}
.feature-card p {
    color: #8a8a9a;
    font-size: 0.95rem;
    line-height: 1.7;
}
.feature-card ul {
    margin-top: 12px;
}
.feature-card ul li {
    color: #b0b0c0;
    font-size: 0.9rem;
    padding: 4px 0;
    padding-left: 20px;
    position: relative;
}
.feature-card ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 12px;
    width: 6px;
    height: 6px;
    background: #ff0013;
    border-radius: 50%;
}

/* ===== Download ===== */
.download {
    background: linear-gradient(180deg, #0a0a1a 0%, #0f0f24 100%);
}
.download-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.download-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    padding: 40px 32px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}
.download-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 48px rgba(255, 0, 19, 0.1);
    border-color: rgba(255, 0, 19, 0.3);
}
.download-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
}
.download-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}
.download-card .platform-info {
    color: #8a8a9a;
    font-size: 0.9rem;
    margin-bottom: 24px;
}
.download-card .btn-primary {
    width: 100%;
    text-align: center;
}
.download-card .developer {
    margin-top: 16px;
    font-size: 0.8rem;
    color: #666;
}

/* ===== Security Warning ===== */
.security-warning {
    background: rgba(255, 107, 53, 0.05);
    border: 2px solid rgba(255, 107, 53, 0.3);
    border-radius: 16px;
    padding: 40px;
    margin: 0 auto;
    max-width: 900px;
}
.security-warning h3 {
    color: #ff6b35;
    font-size: 1.3rem;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.security-warning p {
    color: #b0b0c0;
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 8px;
}
.security-warning a {
    color: #ff6b35;
    font-weight: 600;
}
.security-warning a:hover { text-decoration: underline; }

/* ===== FAQ ===== */
.faq { background: #0a0a1a; }
.faq-category {
    margin-bottom: 48px;
}
.faq-category-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid rgba(255, 0, 19, 0.3);
    display: flex;
    align-items: center;
    gap: 10px;
}
.faq-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    padding: 28px;
    margin-bottom: 16px;
}
.faq-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 16px;
}
.faq-steps {
    counter-reset: step;
}
.faq-step {
    display: flex;
    gap: 16px;
    padding: 10px 0;
    align-items: flex-start;
}
.faq-step-num {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, #ff0013, #ff4d2d);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    color: #fff;
}
.faq-step p {
    color: #b0b0c0;
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===== Footer ===== */
.footer {
    background: #060612;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 60px 0 30px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}
.footer-brand h3 {
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 12px;
}
.footer-brand h3 span { color: #ff0013; }
.footer-brand p {
    color: #8a8a9a;
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 20px;
}
.footer-social { display: flex; gap: 12px; }
.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: all 0.3s;
}
.footer-social a:hover {
    background: rgba(255, 0, 19, 0.15);
    border-color: rgba(255, 0, 19, 0.4);
}
.footer-col h4 {
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 16px;
}
.footer-col a {
    display: block;
    color: #8a8a9a;
    font-size: 0.9rem;
    padding: 4px 0;
    transition: color 0.3s;
}
.footer-col a:hover { color: #ff0013; }
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}
.footer-bottom p {
    color: #666;
    font-size: 0.85rem;
}

/* ===== Page Header (inner pages) ===== */
.page-header {
    padding: 140px 0 60px;
    text-align: center;
    background: radial-gradient(ellipse at 50% 0%, rgba(255, 0, 19, 0.08) 0%, transparent 60%),
                #0a0a1a;
}
.page-header h1 {
    font-size: 2.8rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
}
.page-header p {
    color: #8a8a9a;
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== About Page ===== */
.about-content { max-width: 800px; margin: 0 auto; }
.about-content h2 {
    font-size: 1.6rem;
    font-weight: 700;
    color: #fff;
    margin: 40px 0 16px;
}
.about-content p {
    color: #b0b0c0;
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 16px;
}
.about-content ul { margin-bottom: 16px; }
.about-content ul li {
    color: #b0b0c0;
    padding: 6px 0 6px 24px;
    position: relative;
    font-size: 0.95rem;
}
.about-content ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    width: 8px;
    height: 8px;
    background: #ff0013;
    border-radius: 50%;
}
.timeline {
    position: relative;
    padding-left: 40px;
    margin: 32px 0;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: rgba(255, 0, 19, 0.3);
}
.timeline-item {
    position: relative;
    margin-bottom: 32px;
}
.timeline-item::before {
    content: '';
    position: absolute;
    left: -33px;
    top: 6px;
    width: 12px;
    height: 12px;
    background: #ff0013;
    border-radius: 50%;
    border: 3px solid #0a0a1a;
}
.timeline-item h4 {
    color: #ff6b35;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}
.timeline-item p {
    color: #8a8a9a;
    font-size: 0.9rem;
}

/* ===== Security Page ===== */
.security-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    margin-top: 48px;
}
.security-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    padding: 32px;
}
.security-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.security-card p {
    color: #8a8a9a;
    font-size: 0.95rem;
    line-height: 1.7;
}
.security-card ul { margin-top: 12px; }
.security-card ul li {
    color: #b0b0c0;
    font-size: 0.9rem;
    padding: 4px 0 4px 20px;
    position: relative;
}
.security-card ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 12px;
    width: 6px;
    height: 6px;
    background: #ff0013;
    border-radius: 50%;
}

/* ===== Privacy Page ===== */
.privacy-content { max-width: 800px; margin: 0 auto; }
.privacy-content h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: #fff;
    margin: 36px 0 12px;
}
.privacy-content p {
    color: #b0b0c0;
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 12px;
}
.privacy-content ul { margin: 12px 0; }
.privacy-content ul li {
    color: #b0b0c0;
    padding: 4px 0 4px 24px;
    position: relative;
    font-size: 0.9rem;
}
.privacy-content ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 12px;
    width: 6px;
    height: 6px;
    background: #ff0013;
    border-radius: 50%;
}

/* ===== Contact Page ===== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    max-width: 900px;
    margin: 0 auto;
}
.contact-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    padding: 32px;
    text-align: center;
    transition: transform 0.3s, border-color 0.3s;
}
.contact-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 0, 19, 0.2);
}
.contact-card .icon {
    font-size: 2.4rem;
    margin-bottom: 16px;
    display: block;
}
.contact-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}
.contact-card p {
    color: #8a8a9a;
    font-size: 0.9rem;
    margin-bottom: 16px;
}
.contact-card a {
    color: #ff6b35;
    font-weight: 500;
}
.contact-card a:hover { text-decoration: underline; }

/* ===== Features Detail Page ===== */
.feature-detail {
    margin-bottom: 60px;
}
.feature-detail-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}
.feature-detail-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, rgba(255, 0, 19, 0.15), rgba(255, 107, 53, 0.1));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    flex-shrink: 0;
}
.feature-detail h2 {
    font-size: 1.6rem;
    font-weight: 700;
    color: #fff;
}
.feature-detail p {
    color: #8a8a9a;
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 16px;
}
.feature-detail ul { margin-bottom: 16px; padding-left: 4px; }
.feature-detail ul li {
    color: #b0b0c0;
    font-size: 0.95rem;
    padding: 6px 0 6px 24px;
    position: relative;
}
.feature-detail ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    width: 6px;
    height: 6px;
    background: #ff0013;
    border-radius: 50%;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
    padding: 12px 0;
    font-size: 0.85rem;
    color: #666;
}
.breadcrumb a { color: #8a8a9a; }
.breadcrumb a:hover { color: #ff0013; }
.breadcrumb span { color: #666; margin: 0 8px; }

/* ===== Responsive ===== */
@media (max-width: 991px) {
    .hero .container { flex-direction: column; text-align: center; }
    .hero-content { max-width: 100%; }
    .hero-actions { justify-content: center; }
    .hero h1 { font-size: 2.4rem; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: 1fr; }
    .download-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .security-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .nav-links { display: none; }
    .nav-toggle { display: flex; }
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: rgba(10, 10, 26, 0.98);
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
}
@media (max-width: 767px) {
    .hero h1 { font-size: 2rem; }
    .section { padding: 60px 0; }
    .section-title { font-size: 1.8rem; }
    .page-header h1 { font-size: 2rem; }
    .stat-number { font-size: 2rem; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; text-align: center; }
}