@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,500;0,700;1,500&family=IBM+Plex+Mono:wght@400;500&family=Noto+Serif+SC:wght@500;700&display=swap');

:root {
    --bg-main: #0D0D13;
    --surface: #141420;
    --text-main: #EFEADF;
    --text-muted: #9A9484;
    --gold: #C9A45C;
    --silver: #E8E4D8;
    --hairline: rgba(201, 164, 92, 0.22);
    --font-serif: 'Cormorant Garamond', 'Noto Serif SC', serif;
    --font-mono: 'IBM Plex Mono', monospace, sans-serif;
    --radius: 2px;
}

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

body {
    font-family: var(--font-serif);
    color: var(--text-main);
    background-color: var(--bg-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    font-weight: 500;
}

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background-color: var(--bg-main);
    border-bottom: 1px solid var(--hairline);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-text {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    color: var(--text-main);
    letter-spacing: 0.05em;
    font-weight: 500;
}

.nav {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav a {
    text-decoration: none;
    color: var(--text-muted);
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-size: 0.8rem;
    transition: color 0.3s;
}

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

/* Hero Section */
.hero {
    padding: 140px 0 100px;
    text-align: center;
    position: relative;
    background: radial-gradient(circle at top center, rgba(201,164,92,0.05) 0%, transparent 60%);
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--text-main);
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 48px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: var(--radius);
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.85rem;
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
    min-height: 48px;
}

.btn-primary {
    background-color: var(--gold);
    color: #0D0D13;
    border: 1px solid var(--gold);
}

.btn-primary:hover {
    background-color: #d8b46d;
}

.btn-secondary {
    background-color: transparent;
    color: var(--gold);
    border: 1px solid var(--gold);
}

.btn-secondary:hover {
    background-color: rgba(201,164,92,0.1);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-main);
    border: 1px solid var(--hairline);
}

.btn-outline:hover {
    border-color: var(--gold);
    color: var(--gold);
}

.btn-full {
    width: 100%;
}

/* General Sections */
.section {
    padding: 100px 0;
}

.bg-surface {
    background-color: var(--surface);
    border-top: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 16px;
    font-weight: 700;
    color: var(--text-main);
}

.section-desc {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 48px;
    font-size: 1.1rem;
}

/* Grids */
.grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

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

/* Cards */
.card {
    background-color: var(--surface);
    border-radius: var(--radius);
    padding: 40px 30px;
    border: 1px solid var(--hairline);
    transition: border-color 0.3s;
}

.card:hover {
    border-color: var(--gold);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--gold);
}

.card h3 {
    font-size: 1.6rem;
    margin-bottom: 16px;
    color: var(--silver);
    font-weight: 500;
}

.card p {
    color: var(--text-muted);
}

/* Pricing Card */
.pricing-card {
    text-align: center;
    position: relative;
    padding: 50px 30px;
}

.pricing-card.featured {
    border-color: var(--gold);
}

.badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--bg-main);
    color: var(--gold);
    border: 1px solid var(--gold);
    padding: 4px 12px;
    border-radius: var(--radius);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
}

.price {
    font-size: 3.5rem;
    color: var(--text-main);
    margin: 24px 0;
    font-family: var(--font-serif);
}

.price span {
    font-size: 1rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.pricing-features {
    list-style: none;
    margin-bottom: 40px;
    text-align: left;
}

.pricing-features li {
    padding: 12px 0;
    border-bottom: 1px solid var(--hairline);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 12px;
}

.pricing-features li::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 4px;
    background: var(--gold);
    border-radius: 50%;
}

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 40px auto 0;
}

.faq-item {
    background-color: var(--surface);
    padding: 30px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    border: 1px solid var(--hairline);
}

.faq-item h4 {
    font-size: 1.4rem;
    margin-bottom: 12px;
    color: var(--silver);
    font-weight: 500;
}

.faq-item p {
    color: var(--text-muted);
}

/* Reviews */
.review-text {
    font-family: var(--font-latin);
    font-style: italic;
    font-size: 1.3rem;
    margin-bottom: 24px;
    color: var(--text-main);
    line-height: 1.5;
}

.review-author {
    font-weight: 500;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gold);
    font-size: 0.8rem;
}

/* Footer */
.footer {
    background-color: var(--bg-main);
    border-top: 1px solid var(--hairline);
    padding: 80px 0 40px;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-size: 0.8rem;
}

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

.footer-copy {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Blog Cards */
.blog-card { display: flex; flex-direction: column; background-color: var(--surface); border: 1px solid var(--hairline); border-radius: var(--radius); overflow: hidden; transition: border-color 0.3s; }
.blog-card:hover { border-color: var(--gold); }
.blog-card-content { padding: 30px; display: flex; flex-direction: column; flex-grow: 1; }
.blog-category { font-family: var(--font-mono); color: var(--gold); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 16px; }
.blog-title { font-size: 1.4rem; color: var(--silver); margin-bottom: 16px; line-height: 1.4; font-weight: 500; }
.blog-excerpt { color: var(--text-muted); font-size: 0.95rem; margin-bottom: 24px; flex-grow: 1; }
.blog-meta { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--hairline); padding-top: 20px; font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }

/* Article Content */
.article-container { max-width: 800px; margin: 0 auto; padding: 60px 20px 100px; }
.article-header { margin-bottom: 50px; text-align: center; }
.article-title { font-size: 2.8rem; color: var(--text-main); margin-bottom: 20px; line-height: 1.2; font-weight: 700; }
.article-meta { display: flex; justify-content: center; gap: 24px; font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; border-bottom: 1px solid var(--hairline); padding-bottom: 30px; margin-bottom:40px; }
.article-content { font-size: 1.15rem; line-height: 1.8; color: var(--text-main); }
.article-content h2 { font-size: 1.8rem; color: var(--silver); margin: 60px 0 24px; padding-bottom: 12px; border-bottom: 1px solid var(--hairline); font-weight: 700; }
.article-content h3 { font-size: 1.4rem; color: var(--silver); margin: 40px 0 16px; font-weight: 500; }
.article-content p { margin-bottom: 24px; color: var(--text-muted); }
.article-content ul, .article-content ol { margin-bottom: 24px; padding-left: 24px; color: var(--text-muted); }
.article-content li { margin-bottom: 12px; }
.article-content a { color: var(--gold); text-decoration: none; border-bottom: 1px solid rgba(201,164,92,0.3); transition: border-color 0.3s; }
.article-content a:hover { border-bottom-color: var(--gold); }
.article-content blockquote { margin: 40px 0; padding: 24px 30px; border-left: 2px solid var(--gold); background: rgba(201,164,92,0.05); font-style: italic; font-family: var(--font-latin); font-size: 1.3rem; color: var(--silver); }
.article-content table { width: 100%; border-collapse: collapse; margin: 30px 0; }
.article-content th, .article-content td { padding: 12px 15px; border: 1px solid var(--hairline); text-align: left; }
.article-content th { background: var(--bg-main); color: var(--silver); font-weight: 500; }
.breadcrumb { font-family: var(--font-mono); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 40px; color: var(--text-muted); text-align: left; }
.breadcrumb a { color: var(--text-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--gold); }

/* Simple Pages */
.page-content {
    padding: 80px 20px;
    max-width: 800px;
    margin: 0 auto;
    min-height: 60vh;
}
.page-content h1 { 
    margin-bottom: 40px; 
    font-size: 3rem;
    color: var(--text-main);
    text-align: center;
}
.page-content h2 { 
    margin-top: 50px; 
    margin-bottom: 20px; 
    color: var(--silver);
    border-bottom: 1px solid var(--hairline);
    padding-bottom: 12px;
    font-size: 1.8rem;
}
.page-content p { 
    margin-bottom: 24px; 
    color: var(--text-muted); 
    font-size: 1.1rem;
    line-height: 1.8;
}
.page-content ul { 
    padding-left: 20px; 
    margin-bottom: 24px;
    color: var(--text-muted);
}
.page-content li {
    margin-bottom: 12px;
}
.page-content a {
    color: var(--gold);
    text-decoration: none;
}
.page-content a:hover {
    text-decoration: underline;
}

/* 媒体查询 (响应式适配) */
@media (max-width: 900px) {
    .pricing-card.featured {
        transform: scale(1);
    }
}

@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        justify-content: center;
        gap: 15px;
        height: auto;
        padding: 20px 0;
    }
    
    .nav {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }
    
    .hero {
        padding: 80px 0;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .btn {
        width: 100%;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }

    .grid, .grid-2 {
        grid-template-columns: 1fr;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .footer-links {
        gap: 20px;
        flex-direction: column;
    }
}

/* Floating Tools */
.floating-tools { position: fixed; bottom: 40px; right: 40px; display: flex; flex-direction: column; gap: 15px; z-index: 999; }
.float-btn { width: 48px; height: 48px; background-color: var(--surface); border: 1px solid var(--hairline); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--gold); text-decoration: none; transition: all 0.3s; box-shadow: 0 4px 12px rgba(0,0,0,0.5); }
.float-btn:hover { background-color: var(--gold); color: #0D0D13; transform: translateY(-3px); }
.float-btn svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
@media (max-width: 768px) {
    .floating-tools { bottom: 20px; right: 20px; }
    .float-btn { width: 40px; height: 40px; }
}

/* Next Article Nav */
.next-article-nav { margin-top: 60px; padding-top: 40px; border-top: 1px solid var(--hairline); text-align: center; }
.next-article-nav span { display: block; font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 12px; }
.next-article-nav a { display: inline-flex; align-items: center; gap: 10px; font-size: 1.5rem; color: var(--silver); text-decoration: none; transition: opacity 0.3s; font-weight: 500; border: none; }
.next-article-nav a:hover { opacity: 0.8; color: var(--gold); border: none; }
.next-article-nav a svg { width: 24px; height: 24px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* Hero Image */
.hero-image-wrapper { margin: 60px auto 0; max-width: 800px; border-radius: 4px; overflow: hidden; border: 1px solid var(--hairline); box-shadow: 0 10px 40px rgba(0,0,0,0.4); opacity: 0.9; transition: opacity 0.4s; }
.hero-image-wrapper:hover { opacity: 1; }
.hero-image-wrapper img { width: 100%; height: auto; display: block; filter: brightness(0.8) contrast(1.1); transition: filter 0.5s; }
.hero-image-wrapper img:hover { filter: brightness(1) contrast(1.1); }

/* 平滑滚动与顶部偏移 (适配固定导航栏) */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

/* Trust & Credibility Elements */
.trust-banner { display: flex; flex-wrap: wrap; justify-content: center; gap: 30px; align-items: center; padding: 25px 0; border-top: 1px solid rgba(201,164,92,0.1); margin-top: 40px; }
.trust-item { display: flex; align-items: center; gap: 8px; font-family: var(--font-mono); font-size: 0.9rem; color: var(--silver); text-transform: uppercase; }
.trust-item svg { width: 22px; height: 22px; fill: var(--gold); opacity: 0.9; }
.trust-stars { color: #00b67a; font-size: 1.2rem; letter-spacing: 2px; }

/* Footer Entity Info */
.footer-entity { display: flex; flex-direction: column; gap: 12px; margin-top: 20px; font-size: 0.85rem; color: var(--text-muted); font-family: var(--font-mono); }
.footer-entity p { margin: 0; display: flex; align-items: center; gap: 10px; }
.footer-entity svg { width: 16px; height: 16px; fill: currentColor; }

.social-links { display: flex; gap: 15px; margin-top: 20px; }
.social-links a { color: var(--silver); transition: all 0.3s; opacity: 0.7; }
.social-links a:hover { color: var(--gold); opacity: 1; transform: translateY(-2px); }
.social-links svg { width: 22px; height: 22px; fill: currentColor; }