:root {
    --bg: #081018;
    --surface: #122030;
    --surface-hover: #1a2c42;
    --accent: #60a5fa;
    --accent-dark: #3b82f6;
    --accent2: #fbbf24;
    --accent2-dark: #f59e0b;
    --text: #f0f6ff;
    --muted: #8fa0b8;
    --font-display: 'Anton', sans-serif;
    --font-body: 'Barlow', sans-serif;
    --container-width: 1200px;
    --transition: all 0.3s ease;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

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

a:hover {
    color: var(--accent2);
}

h1, h2, h3, h4, .logo, .footer-brand {
    font-family: var(--font-display);
    font-weight: 400;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-display);
    font-size: 1.1rem;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    min-height: 44px;
    border: none;
}

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

.btn-primary:hover {
    background-color: var(--text);
    color: var(--bg);
    box-shadow: 0 0 15px rgba(96, 165, 250, 0.5);
}

.btn-secondary {
    background-color: transparent;
    color: var(--accent2);
    border: 2px solid var(--accent2);
}

.btn-secondary:hover {
    background-color: var(--accent2);
    color: var(--bg);
}

/* Header & Mobile Menu (Consistent with Homepage) */
header {
    background-color: rgba(8, 16, 24, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--surface);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 2rem;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo:hover {
    color: var(--accent);
}

.nav-links {
    display: none;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--text);
    font-weight: 500;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nav-links a:hover {
    color: var(--accent);
}

.header-ctas {
    display: none;
    gap: 1rem;
}

.mobile-toggle {
    display: block;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.8rem;
    cursor: pointer;
    min-width: 44px;
    min-height: 44px;
}

.mobile-menu {
    display: none;
    flex-direction: column;
    background-color: var(--surface);
    padding: 1rem;
    border-bottom: 1px solid var(--accent);
}

.mobile-menu.active {
    display: flex;
}

.mobile-menu a {
    padding: 1rem;
    color: var(--text);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    font-weight: 500;
    text-transform: uppercase;
}

.mobile-menu a:last-child {
    border-bottom: none;
}

/* Hero Section - Unique to this page */
.hero-data {
    padding: 4rem 0 3rem;
    background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
    position: relative;
    border-bottom: 1px solid var(--surface);
}

.hero-data::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        linear-gradient(rgba(96, 165, 250, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(96, 165, 250, 0.05) 1px, transparent 1px);
    background-size: 30px 30px;
    pointer-events: none;
}

.breadcrumb {
    font-size: 0.875rem;
    color: var(--muted);
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 2;
}

.hero-data h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.1;
    color: var(--accent);
    margin-bottom: 1rem;
    position: relative;
    z-index: 2;
    text-shadow: 0 4px 20px rgba(96, 165, 250, 0.2);
}

.meta-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 2rem;
    position: relative;
    z-index: 2;
}

.chip {
    background-color: rgba(96, 165, 250, 0.1);
    border: 1px solid rgba(96, 165, 250, 0.3);
    color: var(--accent);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
}

.intro-block {
    background-color: var(--surface);
    border-left: 4px solid var(--accent2);
    padding: 1.5rem;
    font-size: 1.125rem;
    color: var(--text);
    position: relative;
    z-index: 2;
    border-radius: 0 8px 8px 0;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

/* Main Content Area - Guide Style */
.guide-content {
    padding: 4rem 0;
    position: relative;
}

.guide-timeline {
    max-width: 900px;
    margin: 0 auto;
}

.guide-section {
    margin-bottom: 4rem;
    position: relative;
}

.guide-section h2 {
    font-size: 2rem;
    color: var(--text);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    border-bottom: 1px solid var(--surface);
    padding-bottom: 0.5rem;
}

.guide-section h2::before {
    content: '';
    display: block;
    width: 24px;
    height: 24px;
    background-color: var(--accent);
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}

.guide-section p {
    margin-bottom: 1.25rem;
    font-size: 1.05rem;
    color: var(--muted);
}

.guide-section p a {
    color: var(--accent2);
    font-weight: 600;
    border-bottom: 1px dashed var(--accent2);
}

.guide-section p a:hover {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* Specific Section Treatments */
.highlight-card {
    background: linear-gradient(135deg, var(--surface) 0%, rgba(18, 32, 48, 0.4) 100%);
    border: 1px solid rgba(96, 165, 250, 0.2);
    padding: 2rem;
    border-radius: 8px;
    margin-top: 1.5rem;
}

/* Custom List Grid for Section 3 */
.data-list-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-top: 2rem;
    list-style: none;
}

.data-list-grid li {
    background-color: var(--surface);
    border: 1px solid rgba(255,255,255,0.05);
    padding: 1.5rem;
    border-radius: 6px;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition: var(--transition);
}

.data-list-grid li:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    background-color: var(--surface-hover);
}

.data-list-grid li::before {
    content: '✦';
    color: var(--accent2);
    font-size: 1.5rem;
    line-height: 1;
}

/* FAQ Section */
.faq-wrapper {
    background-color: var(--surface);
    padding: 4rem 0;
    border-top: 1px solid rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.faq-header {
    text-align: center;
    margin-bottom: 3rem;
}

.faq-header h2 {
    font-size: 2.5rem;
    color: var(--accent);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

details {
    background-color: var(--bg);
    border: 1px solid rgba(96, 165, 250, 0.2);
    border-radius: 6px;
    overflow: hidden;
}

summary {
    padding: 1.25rem 1.5rem;
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: var(--text);
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(255,255,255,0.02);
}

summary::-webkit-details-marker {
    display: none;
}

summary::after {
    content: '+';
    color: var(--accent);
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

details[open] summary::after {
    transform: rotate(45deg);
    color: var(--accent2);
}

details p {
    padding: 0 1.5rem 1.5rem;
    color: var(--muted);
    border-top: 1px solid rgba(255,255,255,0.05);
    margin-top: 1rem;
    padding-top: 1rem;
}

/* Related Pages Nav */
.related-nav {
    padding: 4rem 0;
    text-align: center;
}

.related-nav h3 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--text);
}

.related-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

.related-link {
    background-color: var(--surface);
    color: var(--text);
    padding: 0.75rem 1.5rem;
    border-radius: 30px;
    font-weight: 600;
    border: 1px solid rgba(255,255,255,0.1);
    text-transform: uppercase;
    font-size: 0.9rem;
}

.related-link:hover {
    background-color: var(--accent);
    color: var(--bg);
    border-color: var(--accent);
}

/* Grand CTA */
.grand-cta {
    background: linear-gradient(45deg, var(--surface) 0%, #0c1a29 100%);
    padding: 5rem 0;
    text-align: center;
    border-top: 2px solid var(--accent);
    position: relative;
    overflow: hidden;
}

.grand-cta::after {
    content: '';
    position: absolute;
    right: -10%;
    bottom: -20%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(96,165,250,0.1) 0%, transparent 70%);
}

.grand-cta h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--text);
    margin-bottom: 1rem;
}

.grand-cta p {
    font-size: 1.125rem;
    color: var(--muted);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-group {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer (Consistent with Homepage) */
footer {
    background-color: #050a0f;
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--surface);
    text-align: center;
}

.footer-brand {
    font-size: 2.5rem;
    color: var(--text);
    margin-bottom: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.footer-tagline {
    color: var(--muted);
    margin-bottom: 2rem;
    font-size: 1rem;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem 1.5rem;
    margin-bottom: 3rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.footer-links a {
    color: var(--muted);
    font-size: 0.9rem;
}

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

.footer-copy {
    color: #4a5568;
    font-size: 0.875rem;
    border-top: 1px solid rgba(255,255,255,0.05);
    padding-top: 2rem;
}

/* Breakpoints */
@media (min-width: 768px) {
    .nav-links, .header-ctas {
        display: flex;
    }
    .mobile-toggle {
        display: none;
    }
    .data-list-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .guide-timeline {
        border-left: 2px solid var(--surface);
        padding-left: 3rem;
    }
    .guide-section h2 {
        border-bottom: none;
    }
    .guide-section h2::before {
        position: absolute;
        left: -3rem;
        transform: translateX(-50%);
        background-color: var(--accent2);
        box-shadow: 0 0 0 4px var(--bg);
    }
}


/* pipeline image & layout guards */
html, body { overflow-x: clip; }
img { max-width: 100%; height: auto; }
img.site-logo { height: 40px; width: auto; max-width: 240px; object-fit: contain; flex: none; }
header .logo a { display: inline-flex; align-items: center; flex: none; text-decoration: none; }
img.hero-visual { width: 100%; max-width: 560px; height: auto; object-fit: cover; border-radius: 16px; display: block; margin-inline: auto; }
img[class^="strip-"], img[class*=" strip-"] { width: 100%; height: auto; display: block; border-radius: 12px; object-fit: cover; }
/* 合规声明块（zb-disclaimer，全站 footer） */
.zb-disclaimer { margin-top: 18px !important; padding: 14px 0 0 0 !important; border-top: 1px solid rgba(128,128,128,.25) !important; font-size: .72rem !important; line-height: 1.7 !important; opacity: .85 !important; display: block !important; text-align: left !important; width: 100% !important; clear: both !important; }
.zb-disclaimer .zb-18 { display: inline-block !important; padding: 2px 10px !important; border: 1.5px solid currentColor !important; border-radius: 6px !important; font-weight: 800 !important; letter-spacing: 1px !important; margin: 0 0 10px 0 !important; font-size: .78rem !important; }
.zb-disclaimer p { display: block !important; margin: 5px 0 !important; padding: 0 !important; color: inherit !important; font-size: .72rem !important; line-height: 1.7 !important; }
.zb-disclaimer p:last-child { margin-bottom: 0 !important; }