/* ============================================ */
/* L2克制型 Perplexity Pro Landing Page CSS    */
/* 专为付费广告合规性设计的极简版本              */
/* ============================================ */

/* === RESET & BASE === */
* {
    box-sizing: border-box;
}

/* === HIDE WORDPRESS ELEMENTS === */
header,
.site-header,
.main-header,
.header,
.navbar,
.navigation,
.nav-menu,
.main-navigation,
.site-navigation,
.top-navigation,
.primary-navigation,
.menu,
.wp-block-navigation,
.wp-block-site-logo,
.wp-block-site-title,
.site-branding,
#site-navigation,
#main-navigation,
#primary-menu,
#header,
#masthead,
.masthead,
.entry-header .entry-meta,
#wpadminbar,
footer,
.site-footer,
.main-footer,
.footer,
.footer-widgets,
.footer-area,
.site-info,
.footer-bar,
.copyright,
.copyright-bar,
.footer-copyright,
.site-copyright,
.colophon,
#footer,
#site-footer,
.footer-content,
.footer-wrap,
.footer-container,
.footer-inner,
.powered-by,
.theme-author,
.wp-footer,
.entry-footer,
.post-footer {
    display: none !important;
}

/* === FULL WIDTH LAYOUT === */
body .l2-hero,
body .l2-use-cases,
body .l2-features,
body .l2-how-to,
body .l2-final-cta {
    margin-left: calc(-50vw + 50%) !important;
    margin-right: calc(-50vw + 50%) !important;
    width: 100vw !important;
    max-width: none !important;
    clear: both;
    position: relative;
}

/* === CONTAINER SYSTEM === */
.l2-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
}

/* === TYPOGRAPHY BASE === */
.l2-section-title {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    font-weight: 600;
    text-align: center;
    margin-bottom: 48px;
    color: #1f2937;
    line-height: 1.2;
}

.l2-section-subtitle {
    font-size: 1.125rem;
    text-align: center;
    color: #6b7280;
    margin-bottom: 48px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.5;
}

/* === HERO SECTION === */
.l2-hero {
    background: linear-gradient(135deg, #1e293b, #334155);
    color: #ffffff;
    padding: 80px 0;
    text-align: center;
    position: relative;
}

.l2-hero-content {
    position: relative;
    z-index: 2;
}

.l2-hero-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    margin-bottom: 20px;
    color: #ffffff;
    line-height: 1.2;
}

.l2-hero-subtitle {
    font-size: clamp(1.125rem, 2.5vw, 1.25rem);
    color: #cbd5e1;
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.5;
}

.l2-value-note {
    background: rgba(255, 255, 255, 0.1);
    color: #e2e8f0;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    display: inline-block;
    margin-bottom: 32px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.l2-cta-button {
    background: #2563eb;
    color: #ffffff !important;
    padding: 16px 32px;
    border-radius: 12px;
    font-size: 1.125rem;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: background 300ms ease;
    margin-bottom: 24px;
    border: none;
    cursor: pointer;
}

.l2-cta-button:hover {
    background: #1d4ed8;
    text-decoration: none;
    color: #ffffff !important;
}

.l2-steps {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-top: 24px;
    font-size: 0.875rem;
    color: #94a3b8;
    flex-wrap: wrap;
}

.l2-steps span {
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    white-space: nowrap;
}

/* === USE CASES SECTION === */
.l2-use-cases {
    background: #ffffff;
    padding: 80px 0;
}

.l2-use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    max-width: 1000px;
    margin: 0 auto;
}

.l2-use-case-item {
    padding: 24px;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    background: #ffffff;
    transition: border-color 300ms ease;
}

.l2-use-case-item:hover {
    border-color: #d1d5db;
}

.l2-use-case-item h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: #1f2937;
}

.l2-use-case-item p {
    color: #6b7280;
    line-height: 1.5;
    font-size: 1rem;
    margin: 0;
}

/* === FEATURES SECTION === */
.l2-features {
    background: #f8fafc;
    padding: 80px 0;
}

.l2-features .l2-section-title {
    margin-bottom: 16px;
}

.l2-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.l2-feature-item {
    background: #ffffff;
    padding: 24px;
    border-radius: 12px;
    border: 1px solid #e5e7eb;
    transition: border-color 300ms ease;
}

.l2-feature-item:hover {
    border-color: #d1d5db;
}

.l2-feature-item h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: #1f2937;
}

.l2-feature-item p {
    color: #6b7280;
    line-height: 1.5;
    font-size: 1rem;
    margin: 0;
}

/* === HOW-TO SECTION === */
.l2-how-to {
    background: #ffffff;
    padding: 80px 0;
}

.l2-steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
    max-width: 800px;
    margin: 0 auto;
}

.l2-step {
    text-align: center;
    padding: 24px;
}

.l2-step-number {
    width: 40px;
    height: 40px;
    background: #2563eb;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    font-weight: 600;
    color: #ffffff;
    margin: 0 auto 16px auto;
}

.l2-step p {
    color: #374151;
    font-size: 1rem;
    line-height: 1.4;
    margin: 0;
}

/* === FINAL CTA SECTION === */
.l2-final-cta {
    background: #f8fafc;
    padding: 80px 0;
    text-align: center;
}

.l2-final-cta .l2-section-title {
    margin-bottom: 16px;
}

.l2-cta-button-final {
    background: #2563eb;
    color: #ffffff !important;
    padding: 16px 48px;
    border-radius: 12px;
    font-size: 1.125rem;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: background 300ms ease;
    margin-bottom: 32px;
    border: none;
    cursor: pointer;
}

.l2-cta-button-final:hover {
    background: #1d4ed8;
    text-decoration: none;
    color: #ffffff !important;
}

/* === FOOTER === */
.l2-footer {
    background: #ffffff;
    color: #6b7280;
    padding: 48px 0;
    text-align: center;
    border-top: 1px solid #e5e7eb;
}

.l2-footer-links {
    margin-bottom: 16px;
}

.l2-footer-links a {
    color: #6b7280;
    text-decoration: none;
    margin: 0 16px;
    font-size: 0.875rem;
    transition: color 300ms ease;
}

.l2-footer-links a:hover {
    color: #374151;
    text-decoration: underline;
}

.l2-disclaimer {
    font-size: 0.75rem;
    color: #6b7280;
    max-width: 500px;
    margin: 0 auto;
    line-height: 1.4;
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 768px) {
    .l2-container {
        padding: 0 20px;
    }
    
    .l2-use-cases-grid,
    .l2-features-grid,
    .l2-steps-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .l2-steps {
        flex-direction: column;
        gap: 16px;
    }
    
    .l2-footer-links {
        display: flex;
        flex-direction: column;
        gap: 12px;
        align-items: center;
    }
    
    .l2-footer-links a {
        margin: 0;
        padding: 8px;
    }
    
    .l2-cta-button,
    .l2-cta-button-final {
        padding: 14px 28px;
        font-size: 1rem;
    }
    
    .l2-hero,
    .l2-use-cases,
    .l2-features,
    .l2-how-to,
    .l2-final-cta {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .l2-container {
        padding: 0 16px;
    }
    
    .l2-hero,
    .l2-use-cases,
    .l2-features,
    .l2-how-to,
    .l2-final-cta {
        padding: 50px 0;
    }
    
    .l2-steps span {
        font-size: 0.75rem;
        padding: 6px 10px;
    }
    
    .l2-use-case-item,
    .l2-feature-item {
        padding: 20px;
    }
    
    .l2-step {
        padding: 16px;
    }
}