/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: #0a0e1a;
    color: #e2e8f0;
    line-height: 1.7;
    overflow-x: hidden;
}
a { color: #f59e0b; text-decoration: none; transition: color 0.3s; }
a:hover { color: #fbbf24; }

/* ===== Container ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 14, 26, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    transition: all 0.3s;
}
.navbar.scrolled {
    background: rgba(10, 14, 26, 0.95);
    box-shadow: 0 4px 24px rgba(0,0,0,0.3);
}
.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}
.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 800;
    color: #f59e0b;
    text-decoration: none;
}
.nav-brand-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: #0a0e1a;
}
.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}
.nav-links a {
    color: #94a3b8;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s;
    text-decoration: none;
}
.nav-links a:hover { color: #f59e0b; }
.nav-cta {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #0a0e1a !important;
    padding: 8px 20px;
    border-radius: 8px;
    font-weight: 700 !important;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3); }
.nav-mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: #e2e8f0;
    font-size: 24px;
    cursor: pointer;
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, #0a0e1a 0%, #1a1f35 30%, #0f1729 60%, #0a0e1a 100%);
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(ellipse at 30% 20%, rgba(245, 158, 11, 0.06) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 80%, rgba(59, 130, 246, 0.04) 0%, transparent 50%);
    animation: heroFloat 20s ease-in-out infinite;
}
@keyframes heroFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(-2%, 2%) rotate(1deg); }
}
.hero-content { position: relative; z-index: 2; padding: 100px 20px 40px; }
.hero-badge {
    display: inline-block;
    background: rgba(245, 158, 11, 0.15);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: #f59e0b;
    padding: 6px 20px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 24px;
}
.hero-title {
    font-size: clamp(36px, 6vw, 72px);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #f59e0b, #fbbf24, #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-subtitle {
    font-size: clamp(16px, 2.5vw, 22px);
    color: #94a3b8;
    margin-bottom: 16px;
    font-weight: 300;
}
.hero-desc {
    font-size: clamp(14px, 1.8vw, 17px);
    color: #64748b;
    max-width: 720px;
    margin: 0 auto 40px;
    line-height: 1.9;
}
.hero-brand {
    font-size: clamp(14px, 2vw, 18px);
    color: #64748b;
    margin-bottom: 12px;
}
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    text-decoration: none;
}
.btn-primary {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #0a0e1a;
    box-shadow: 0 4px 24px rgba(245, 158, 11, 0.3);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(245, 158, 11, 0.4);
    color: #0a0e1a;
}
.btn-secondary {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.15);
    color: #e2e8f0;
}
.btn-secondary:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-2px);
    color: #e2e8f0;
}
.hero-stats {
    display: flex;
    gap: 48px;
    justify-content: center;
    margin-top: 56px;
    flex-wrap: wrap;
}
.stat { text-align: center; }
.stat-number {
    font-size: 36px;
    font-weight: 900;
    color: #f59e0b;
    line-height: 1.2;
}
.stat-label { font-size: 13px; color: #64748b; margin-top: 4px; }

/* ===== Section Common ===== */
section { padding: 80px 0; position: relative; }
.section-header { text-align: center; margin-bottom: 56px; }
.section-tag {
    display: inline-block;
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
    padding: 4px 16px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 16px;
}
.section-title {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 800;
    color: #f1f5f9;
    margin-bottom: 12px;
}
.section-desc { font-size: 16px; color: #94a3b8; max-width: 700px; margin: 0 auto; line-height: 1.8; }

/* ===== Features Grid ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 24px;
}
.feature-card {
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.6), rgba(15, 23, 42, 0.8));
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 16px;
    padding: 32px;
    transition: all 0.4s;
}
.feature-card:hover {
    border-color: rgba(245, 158, 11, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}
.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 16px;
    background: rgba(245, 158, 11, 0.1);
}
.feature-title { font-size: 18px; font-weight: 700; color: #f1f5f9; margin-bottom: 8px; }
.feature-desc { font-size: 14px; color: #94a3b8; line-height: 1.8; }

/* ===== Detail Section ===== */
.detail-section { background: linear-gradient(180deg, #0a0e1a, #0f1729, #0a0e1a); }
.detail-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    margin-bottom: 80px;
}
.detail-block:last-child { margin-bottom: 0; }
.detail-block.reverse { direction: rtl; }
.detail-block.reverse > * { direction: ltr; }
.detail-text h3 {
    font-size: 28px;
    font-weight: 800;
    color: #f1f5f9;
    margin-bottom: 16px;
}
.detail-text h3 span { color: #f59e0b; }
.detail-text p {
    font-size: 15px;
    color: #94a3b8;
    line-height: 1.9;
    margin-bottom: 12px;
}
.detail-text ul {
    list-style: none;
    margin-top: 16px;
}
.detail-text ul li {
    padding: 6px 0;
    font-size: 14px;
    color: #cbd5e1;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    line-height: 1.7;
}
.detail-text ul li::before {
    content: '\2713';
    color: #f59e0b;
    font-weight: 700;
    margin-top: 2px;
    flex-shrink: 0;
}
.detail-img {
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.06);
    background: #111827;
}
.detail-img img {
    width: 100%;
    display: block;
}

/* ===== Screenshot Gallery ===== */
.screenshot-section { background: linear-gradient(180deg, #0a0e1a, #0f1729, #0a0e1a); }
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 20px;
}
.gallery-item {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.06);
    background: #111827;
    cursor: pointer;
    transition: all 0.4s;
}
.gallery-item:hover {
    border-color: rgba(245, 158, 11, 0.3);
    transform: scale(1.02);
    box-shadow: 0 16px 48px rgba(0,0,0,0.4);
}
.gallery-item img {
    width: 100%;
    display: block;
    transition: transform 0.6s;
}
.gallery-item:hover img { transform: scale(1.05); }
.gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 16px 20px;
    background: linear-gradient(transparent, rgba(0,0,0,0.85));
    font-size: 14px;
    color: #e2e8f0;
    font-weight: 500;
}

/* ===== How It Works ===== */
.steps-container {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
}
.step {
    flex: 1;
    min-width: 200px;
    max-width: 220px;
    text-align: center;
    position: relative;
}
.step-number {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #0a0e1a;
    font-size: 22px;
    font-weight: 900;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    box-shadow: 0 4px 20px rgba(245, 158, 11, 0.3);
}
.step-title { font-size: 16px; font-weight: 700; color: #f1f5f9; margin-bottom: 6px; }
.step-desc { font-size: 13px; color: #94a3b8; }
.step-arrow {
    position: absolute;
    top: 28px;
    right: -24px;
    color: #475569;
    font-size: 20px;
}

/* ===== Pricing ===== */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}
.price-card {
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.5), rgba(15, 23, 42, 0.7));
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 20px;
    padding: 32px 24px;
    text-align: center;
    transition: all 0.4s;
    position: relative;
}
.price-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}
.price-card.featured {
    border-color: rgba(245, 158, 11, 0.4);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.08), rgba(30, 41, 59, 0.5));
}
.price-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #0a0e1a;
    padding: 4px 16px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 700;
}
.price-name { font-size: 18px; font-weight: 700; color: #f1f5f9; margin-bottom: 4px; }
.price-duration { font-size: 13px; color: #64748b; margin-bottom: 20px; }
.price-amount {
    font-size: 42px;
    font-weight: 900;
    color: #f59e0b;
    margin-bottom: 4px;
}
.price-amount span { font-size: 18px; color: #94a3b8; font-weight: 400; }
.price-desc {
    font-size: 13px;
    color: #64748b;
    margin-top: 8px;
    line-height: 1.6;
}
.price-features {
    list-style: none;
    margin-top: 20px;
    text-align: left;
}
.price-features li {
    padding: 8px 0;
    font-size: 14px;
    color: #cbd5e1;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    display: flex;
    align-items: center;
    gap: 8px;
}
.price-features li::before {
    content: '\2713';
    color: #34d399;
    font-weight: 700;
}

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 12px;
    margin-bottom: 12px;
    overflow: hidden;
    background: rgba(30, 41, 59, 0.3);
}
.faq-q {
    padding: 20px 24px;
    font-weight: 600;
    color: #f1f5f9;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s;
}
.faq-q:hover { background: rgba(255,255,255,0.03); }
.faq-q::after { content: '+'; font-size: 20px; color: #64748b; transition: transform 0.3s; }
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}
.faq-item.open .faq-a { max-height: 500px; }
.faq-a-inner {
    padding: 0 24px 20px;
    font-size: 14px;
    color: #94a3b8;
    line-height: 1.9;
}

/* ===== Contact Section ===== */
.contact-section {
    background: linear-gradient(135deg, #0f1729, #1a1f35);
}
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}
.contact-card {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 16px;
    padding: 28px;
    text-align: center;
    transition: all 0.4s;
}
.contact-card:hover {
    border-color: rgba(245, 158, 11, 0.3);
    transform: translateY(-4px);
}
.contact-card img {
    width: 160px;
    height: 160px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 12px;
    border: 2px solid rgba(255,255,255,0.1);
}
.contact-label { font-size: 14px; color: #94a3b8; margin-bottom: 4px; }
.contact-value { font-size: 16px; font-weight: 700; color: #f1f5f9; }
.contact-value a { color: #f59e0b; }

/* ===== Footer ===== */
.footer {
    background: #080b14;
    border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 48px 20px 24px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}
.footer-brand {
    font-size: 20px;
    font-weight: 800;
    color: #f59e0b;
    margin-bottom: 12px;
}
.footer-brand-desc {
    font-size: 14px;
    color: #64748b;
    line-height: 1.7;
    max-width: 300px;
}
.footer-col-title {
    font-size: 14px;
    font-weight: 700;
    color: #f1f5f9;
    margin-bottom: 16px;
}
.footer-links {
    list-style: none;
}
.footer-links li {
    margin-bottom: 8px;
}
.footer-links a {
    font-size: 14px;
    color: #64748b;
    transition: color 0.3s;
    text-decoration: none;
}
.footer-links a:hover { color: #f59e0b; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: #475569;
    flex-wrap: wrap;
    gap: 12px;
}

/* ===== Risk Banner ===== */
.risk-banner {
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: 12px;
    padding: 24px;
    max-width: 800px;
    margin: 0 auto;
    font-size: 13px;
    color: #94a3b8;
    line-height: 1.8;
}
.risk-banner strong { color: #ef4444; }

/* ===== Lightbox ===== */
.lightbox {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.92);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}
.lightbox.active { display: flex; }
.lightbox img {
    max-width: 90%;
    max-height: 90%;
    border-radius: 8px;
    box-shadow: 0 0 60px rgba(0,0,0,0.5);
}
.lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 36px;
    color: #fff;
    cursor: pointer;
    z-index: 1001;
}

/* ===== Highlight Box ===== */
.highlight-box {
    background: rgba(245, 158, 11, 0.06);
    border: 1px solid rgba(245, 158, 11, 0.15);
    border-radius: 12px;
    padding: 24px 28px;
    margin-top: 20px;
}
.highlight-box p {
    font-size: 14px;
    color: #cbd5e1;
    line-height: 1.8;
}
.highlight-box strong { color: #f59e0b; }

/* ===== Back to Top ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #0a0e1a;
    border: none;
    cursor: pointer;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s;
    z-index: 99;
    box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
}
.back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
}
.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(245, 158, 11, 0.4);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .hero-stats { gap: 24px; }
    .stat-number { font-size: 28px; }
    .gallery-grid { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr 1fr; }
    .step-arrow { display: none; }
    .contact-grid { grid-template-columns: 1fr 1fr; }
    .detail-block { grid-template-columns: 1fr; gap: 24px; }
    .detail-block.reverse { direction: ltr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .nav-links { display: none; }
    .nav-mobile-toggle { display: block; }
    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: rgba(10, 14, 26, 0.98);
        padding: 20px;
        gap: 16px;
        border-bottom: 1px solid rgba(255,255,255,0.06);
    }
}
@media (max-width: 480px) {
    .pricing-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
}

/* ===== Animations ===== */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s, transform 0.6s;
}
.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Decorative ===== */
.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
    opacity: 0.5;
}
.glow-orb-1 { width: 400px; height: 400px; background: rgba(245, 158, 11, 0.04); top: 10%; left: -10%; }
.glow-orb-2 { width: 300px; height: 300px; background: rgba(59, 130, 246, 0.03); bottom: 10%; right: -5%; }

/* ===== Theme Screenshot Labels ===== */
.theme-label {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(245, 158, 11, 0.9);
    color: #0a0e1a;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 700;
    z-index: 2;
}