/* Reset and Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #F5EDD8; /* 香槟白 */
    background: linear-gradient(135deg, #0A1230 0%, #0E1A3C 100%);
    background-attachment: fixed;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
}
h1, h2, h3, h4 {
    background: linear-gradient(to right, #F0DCA0, #E3C069); /* 淡金到鎏金渐变 */
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 15px;
}
a {
    text-decoration: none;
    color: #E3C069;
}

/* Navigation */
.navbar {
    background: rgba(10, 18, 48, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0,0,0,0.5);
    position: sticky;
    top: 0;
    z-index: 1000;
}
.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}
.nav-logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #E3C069;
    text-decoration: none;
    flex: 1;
}
.nav-links {
    display: flex;
    gap: 30px;
    align-items: center;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}
.nav-links a {
    color: #F5EDD8;
    font-weight: 500;
    transition: color 0.3s;
}
.nav-links a:hover {
    color: #E3C069;
}
.nav-right {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}
.nav-btn {
    background-color: #E3C069;
    color: #241A05 !important; /* 深金棕文字 */
    padding: 8px 20px;
    border-radius: 20px;
}
.nav-btn:hover {
    background-color: #F0DCA0;
}

/* Header / Hero */
.hero {
    text-align: center;
    padding: 80px 20px;
}
.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}
.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    color: #F5EDD8;
}
.cta-button {
    display: inline-block;
    background-color: #E3C069;
    color: #241A05 !important;
    padding: 15px 30px;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: bold;
    transition: background-color 0.3s;
}
.cta-button:hover {
    background-color: #F0DCA0;
}

/* Sections */
section {
    padding: 100px 0;
}
section h2 {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 60px;
    letter-spacing: 2px;
}

/* Grids & Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}
.card {
    background: rgba(255, 255, 255, 0.05); /* 卡片白 5% 半透明 */
    border: 1px solid rgba(227, 192, 105, 0.3); /* 金色细描边 */
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    text-align: center;
    transition: transform 0.3s;
    backdrop-filter: blur(5px);
}
.card:hover {
    transform: translateY(-5px);
}
.card .icon {
    font-size: 3rem;
    margin-bottom: 20px;
}
.support-card {
    text-align: left;
}
.support-card h3 {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Pricing */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    align-items: center;
}
.pricing-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(227, 192, 105, 0.3);
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    position: relative;
    backdrop-filter: blur(5px);
}
.pricing-card.popular {
    border: 2px solid #E3C069;
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(227, 192, 105, 0.15);
}
.badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: #E3C069;
    color: #241A05;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: bold;
}
.price {
    font-size: 2.5rem;
    font-weight: bold;
    color: #E3C069;
    margin: 20px 0;
}
.price span {
    font-size: 1rem;
    color: #F0DCA0;
}
.pricing-card ul {
    list-style: none;
    margin-bottom: 30px;
    text-align: left;
}
.pricing-card li {
    padding: 10px 0;
    border-bottom: 1px solid rgba(227, 192, 105, 0.2);
}
.pricing-card li:last-child {
    border-bottom: none;
}

/* Reviews */
.review-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(227, 192, 105, 0.3);
    padding: 30px;
    border-radius: 12px;
    font-style: italic;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    backdrop-filter: blur(5px);
}
.reviewer {
    margin-top: 15px;
    font-weight: bold;
    font-style: normal;
    text-align: right;
    color: #F0DCA0;
}

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}
.faq-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(227, 192, 105, 0.3);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 15px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
    backdrop-filter: blur(5px);
}
.faq-item h4 {
    margin-bottom: 10px;
    color: #E3C069;
}

/* Footer */
.footer {
    background: #0A1230;
    border-top: 1px solid rgba(227, 192, 105, 0.2);
    color: #F5EDD8;
    padding: 40px 20px;
    text-align: center;
}
.footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.footer-links a {
    color: #F0DCA0;
    transition: color 0.3s;
}
.footer-links a:hover {
    color: #E3C069;
}
.copyright {
    color: rgba(245, 237, 216, 0.5);
    font-size: 0.9rem;
}

/* Page Contents (for subpages) */
.page-content {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(227, 192, 105, 0.3);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    margin-top: 40px;
    margin-bottom: 40px;
    backdrop-filter: blur(5px);
}
.page-content h2 {
    text-align: left;
    border-bottom: 2px solid rgba(227, 192, 105, 0.2);
    padding-bottom: 10px;
    margin-top: 30px;
    -webkit-background-clip: unset;
    -webkit-text-fill-color: unset;
    background: none;
    color: #E3C069;
}
.page-content h2:first-of-type {
    margin-top: 0;
}
.page-content p, .page-content ul {
    margin-bottom: 15px;
}
.page-content ul {
    padding-left: 20px;
}
.page-header {
    background: transparent;
    border-bottom: 1px solid rgba(227, 192, 105, 0.2);
    color: #E3C069;
    padding: 40px 20px;
    text-align: center;
}
.back-home {
    display: inline-block;
    margin-top: 20px;
    color: #E3C069;
    font-weight: bold;
}

/* Media Queries (Responsive) */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    .pricing-card.popular {
        transform: scale(1);
    }
    .footer-links {
        flex-direction: column;
        gap: 15px;
    }
    .page-content {
        padding: 20px;
    }
    .cta-button {
        display: block;
        width: 100%;
        text-align: center;
        padding: 20px; /* touch-friendly padding */
    }
    .nav-links {
        display: none;
    }
}

/* Background Animation Layer (Decorations) */
.bg-decorations {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
}

/* 1. Breathing Golden Glow behind title */
.glow-title {
    position: absolute;
    top: 5%;
    left: 50%;
    width: 600px;
    height: 400px;
    margin-left: -300px;
    background: radial-gradient(ellipse at center, rgba(227, 192, 105, 0.25) 0%, rgba(10, 18, 48, 0) 70%);
    animation: breatheGlow 10s ease-in-out infinite alternate;
}

@keyframes breatheGlow {
    0% { transform: scale(1); }
    100% { transform: scale(1.07); }
}

/* 2. 3 Golden Light Bands (sweep) */
.light-band {
    position: absolute;
    width: 150vw;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(240, 220, 160, 0.8), transparent);
    transform-origin: left center;
}
.light-band-1 {
    top: 15%;
    left: -50vw;
    animation: sweepBand 9s linear infinite;
}
.light-band-2 {
    top: 40%;
    left: -50vw;
    animation: sweepBand 12s linear infinite 3s;
}
.light-band-3 {
    top: 80%;
    left: -50vw;
    animation: sweepBand 15s linear infinite 6s;
}

@keyframes sweepBand {
    0% { transform: translateX(0) rotate(18deg); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateX(200vw) rotate(18deg); opacity: 0; }
}

/* 3. 4 Golden Dust Particles */
.dust {
    position: absolute;
    bottom: -20px;
    width: 4px;
    height: 4px;
    background: #E3C069;
    border-radius: 50%;
    box-shadow: 0 0 10px 2px rgba(227, 192, 105, 0.8);
}
.dust-1 { left: 20%; animation: floatDust 22s linear infinite; }
.dust-2 { left: 45%; animation: floatDust 25s linear infinite 5s; }
.dust-3 { left: 70%; animation: floatDust 30s linear infinite 12s; }
.dust-4 { left: 85%; animation: floatDust 27s linear infinite 8s; }

@keyframes floatDust {
    0% { transform: translateY(0); opacity: 0; }
    20% { opacity: 0.8; }
    80% { opacity: 0.8; }
    100% { transform: translateY(-110vh); opacity: 0; }
}

/* 4. Golden Dashed Flight Route & Dot */
.flight-route {
    position: absolute;
    top: 70%;
    left: 0;
    width: 100%;
    height: 1px;
    background-image: linear-gradient(90deg, rgba(227, 192, 105, 0.3) 50%, transparent 50%);
    background-size: 20px 1px;
}
.flight-dot {
    position: absolute;
    top: -3px;
    left: -10px;
    width: 7px;
    height: 7px;
    background: #E3C069;
    border-radius: 50%;
    box-shadow: 0 0 12px 4px rgba(227, 192, 105, 1);
    animation: flyDot 12s linear infinite;
}

@keyframes flyDot {
    0% { transform: translateX(-50px); opacity: 0; }
    5% { opacity: 1; }
    95% { opacity: 1; }
    100% { transform: translateX(110vw); opacity: 0; }
}

/* Accessibility: prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
    .glow-title, .light-band, .dust, .flight-dot {
        animation: none !important;
        opacity: 0 !important;
    }
}

/* Accessibility: Skip Link */
.skip-link {
    position: absolute;
    top: -50px;
    left: 0;
    background: #E3C069;
    color: #0A1230;
    padding: 10px 20px;
    z-index: 9999;
    transition: top 0.2s;
    text-decoration: none;
    font-weight: bold;
    border-radius: 0 0 8px 0;
}
.skip-link:focus {
    top: 0;
}

/* Scroll margin for fixed header */
section, main, [id] {
    scroll-margin-top: 90px;
}

/* FAQ Details/Summary */
details.faq-item, details.seo-faq-item {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(227, 192, 105, 0.2);
    border-radius: 12px;
    margin-bottom: 15px;
    padding: 15px 20px;
}
details.faq-item summary, details.seo-faq-item summary {
    color: #E3C069;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    list-style: none;
    outline: none;
}
details.faq-item summary::-webkit-details-marker, details.seo-faq-item summary::-webkit-details-marker {
    display: none;
}
details.faq-item p, details.seo-faq-item p {
    color: #F0DCA0;
    margin-top: 10px;
    margin-bottom: 0;
    line-height: 1.6;
}