@charset "utf-8";
/*
    Theme Name: yollo AI官网
    Theme URI: 
    Author: 阿叶
    Author URI: 
    Description:
    Version: 0.0.1
*/
:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --bg-dark: #0a0a0f;
    --bg-card: rgba(20, 20, 30, 0.6);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --glow-purple: rgba(118, 75, 162, 0.5);
    --glow-blue: rgba(102, 126, 234, 0.5);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    overflow-x: hidden;
    min-height: 100vh;
}
a,a:hover {
    text-decoration: none;
}

/* Background Effects */
.yo-bg-gradient-orb {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(150px);
    opacity: 0.3;
    pointer-events: none;
    z-index: 0;
}

.yo-orb-1 {
    top: -200px;
    right: -200px;
    background: var(--accent-gradient);
}

.yo-orb-2 {
    bottom: -200px;
    left: -200px;
    background: linear-gradient(135deg, #f093fb 0%, #667eea 100%);
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1rem 2rem;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(102, 126, 234, 0.1);
}

.yo-nav-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.yo-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.yo-logo img {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    object-fit: cover;
    box-shadow: 0 0 20px var(--glow-purple);
}

.yo-logo-text {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.yo-nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.yo-nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.yo-nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: width 0.3s ease;
}

.yo-nav-links a:hover {
    color: var(--text-primary);
}

.yo-nav-links a:hover::after {
    width: 100%;
}

.yo-btn-primary {
    padding: 0.75rem 1.75rem;
    background: var(--accent-gradient);
    border: none;
    border-radius: 50px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px var(--glow-purple);
}

.yo-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px var(--glow-purple);
}

/* Hero Section - Vertical Layout */
.yo-hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 10rem 2rem 4rem;
    position: relative;
    z-index: 1;
}

.yo-hero-header {
    text-align: center;
    max-width: 900px;
    margin-bottom: 3rem;
}

.yo-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.15), rgba(118, 75, 162, 0.15));
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-radius: 50px;
    font-size: 0.875rem;
    color: #a5b4fc;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
}

.yo-hero-badge i {
    font-size: 1rem;
    color: #f093fb;
}

.yo-hero h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.yo-hero h1 span {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.yo-hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.yo-hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.yo-btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.yo-btn-secondary {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    background: transparent;
    border: 2px solid rgba(102, 126, 234, 0.5);
    border-radius: 50px;
    color: var(--text-primary);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.yo-btn-secondary:hover {
    background: rgba(102, 126, 234, 0.1);
    border-color: #667eea;
}

/* Hero Gallery */
.yo-hero-gallery {
    width: 100%;
    max-width: 1200px;
    margin-top: 2rem;
}

.yo-gallery-container {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    align-items: flex-end;
}

.yo-gallery-item {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    transition: all 0.4s ease;
}

.yo-gallery-item:nth-child(1) {
    width: 280px;
    height: 380px;
    transform: translateY(40px);
}

.yo-gallery-item:nth-child(2) {
    width: 320px;
    height: 420px;
    z-index: 2;
}

.yo-gallery-item:nth-child(3) {
    width: 280px;
    height: 380px;
    transform: translateY(40px);
}

.yo-gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.yo-gallery-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(10, 10, 15, 0.8) 100%);
    pointer-events: none;
}

.yo-gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1.5rem;
    z-index: 2;
}

.yo-gallery-name {
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.yo-gallery-role {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.yo-gallery-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(102, 126, 234, 0.3);
}

.yo-gallery-item:nth-child(1):hover,
.yo-gallery-item:nth-child(3):hover {
    transform: translateY(30px);
}

/* Hero Stats Bar */
.yo-hero-stats-bar {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-top: 4rem;
    padding: 1.5rem 3rem;
    background: rgba(20, 20, 35, 0.5);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(102, 126, 234, 0.15);
    border-radius: 50px;
}

.yo-stat-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.yo-stat-icon {
    width: 44px;
    height: 44px;
    background: var(--accent-gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.yo-stat-icon i {
    font-size: 1.25rem;
    color: white;
}

.yo-stat-content {
    display: flex;
    flex-direction: column;
}

.yo-stat-number {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1;
}

.yo-stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Section Styles */
section {
    padding: 6rem 2rem;
    position: relative;
    z-index: 1;
}

.yo-section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.yo-section-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(118, 75, 162, 0.2);
    border-radius: 50px;
    font-size: 0.875rem;
    color: #764ba2;
    margin-bottom: 1rem;
    font-weight: 500;
}

.yo-section-title {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
}

.yo-section-subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

/* FAQ / Help Section */
.yo-faq-section {
    background: linear-gradient(180deg, transparent 0%, rgba(102, 126, 234, 0.05) 50%, transparent 100%);
}

.yo-faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.yo-faq-item {
    background: var(--bg-card);
    border: 1px solid rgba(102, 126, 234, 0.15);
    border-radius: 16px;
    margin-bottom: 1rem;
    overflow: hidden;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.yo-faq-item:hover {
    border-color: rgba(102, 126, 234, 0.3);
}

.yo-faq-item.active {
    border-color: rgba(102, 126, 234, 0.4);
    box-shadow: 0 10px 40px rgba(102, 126, 234, 0.1);
}

.yo-faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 2rem;
    cursor: pointer;
    user-select: none;
    gap: 1rem;
}

.yo-faq-question-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.yo-faq-question-left i {
    font-size: 1.25rem;
    color: #667eea;
    flex-shrink: 0;
}

.yo-faq-question-left h3 {
    font-size: 1.05rem;
    font-weight: 600;
}

.yo-faq-toggle {
    width: 32px;
    height: 32px;
    background: rgba(102, 126, 234, 0.15);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.yo-faq-toggle i {
    font-size: 1.25rem;
    color: #667eea;
    transition: transform 0.3s ease;
}

.yo-faq-item.active .yo-faq-toggle {
    background: var(--accent-gradient);
}

.yo-faq-item.active .yo-faq-toggle i {
    color: white;
    transform: rotate(180deg);
}

.yo-faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
}

.yo-faq-answer-inner {
    padding: 0 2rem 1.5rem;
    padding-left: 4.5rem;
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 0.95rem;
}

.yo-faq-item.active .yo-faq-answer {
    max-height: 300px;
}

/* Features Section */
.yo-features {
    background: var(--bg-dark);
}

.yo-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.yo-feature-card {
    padding: 2.5rem;
    background: var(--bg-card);
    border: 1px solid rgba(102, 126, 234, 0.15);
    border-radius: 24px;
    backdrop-filter: blur(10px);
    transition: all 0.4s ease;
}

.yo-feature-card:hover {
    border-color: rgba(102, 126, 234, 0.4);
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.yo-feature-icon {
    width: 60px;
    height: 60px;
    background: var(--accent-gradient);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.yo-feature-icon i {
    font-size: 1.75rem;
    color: white;
}

.yo-feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.yo-feature-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Testimonials */
.yo-testimonials {
    background: linear-gradient(180deg, transparent 0%, rgba(118, 75, 162, 0.05) 50%, transparent 100%);
}

.yo-testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.yo-testimonial-card {
    padding: 2.5rem;
    background: var(--bg-card);
    border: 1px solid rgba(102, 126, 234, 0.1);
    border-radius: 24px;
    backdrop-filter: blur(10px);
    transition: all 0.4s ease;
}

.yo-testimonial-card:hover {
    border-color: rgba(102, 126, 234, 0.3);
    transform: translateY(-5px);
}

.yo-testimonial-stars {
    color: #f093fb;
    font-size: 1.25rem;
    margin-bottom: 1rem;
    letter-spacing: 2px;
}

.yo-testimonial-stars i {
    color: #f093fb;
}

.yo-testimonial-text {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.yo-testimonial-author {
}

.yo-author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.25rem;
}
.yo-author-info {
    display: flex;
}

.yo-author-info h4 {
    font-weight: 600;
    flex: 1;
    margin-bottom: 0.25rem;
}

.yo-author-info span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}



/* Footer */
footer {
    padding: 3rem 2rem;
    border-top: 1px solid rgba(102, 126, 234, 0.1);
    text-align: center;
    position: relative;
    z-index: 1;
}

.yo-footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.yo-footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.yo-footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.yo-footer-links a:hover {
    color: #667eea;
}

.yo-footer-copy {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Mobile Menu */
.yo-mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    color: var(--text-primary);
    font-size: 1.5rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .yo-features-grid,
    .yo-testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .yo-gallery-container {
        gap: 1rem;
    }

    .yo-gallery-item:nth-child(1),
    .yo-gallery-item:nth-child(3) {
        width: 200px;
        height: 280px;
    }

    .yo-gallery-item:nth-child(2) {
        width: 240px;
        height: 320px;
    }
}

@media (max-width: 768px) {
    section {
        padding: 6rem 1rem;
    }
    .yo-hero {
        min-height: auto;
    }
    .yo-hero-buttons .yo-btn-secondary,
    .yo-hero-stats-bar,
    .yo-hero-gallery,
    .yo-nav-content .yo-btn-primary {
        display: none;
    }
    .yo-nav-links {
        display: none;
    }

    .yo-mobile-menu-btn {
        display: block;
    }
    .yo-hero-header {
        margin-bottom: 0;
    }
    .yo-hero {
        padding: 8rem 1rem 3rem;
    }

    .yo-hero h1 {
        font-size: 2.25rem;
    }

    .yo-hero-description {
        font-size: 1rem;
    }

    .yo-gallery-container {
        flex-direction: column;
        align-items: center;
    }

    .yo-gallery-item:nth-child(1),
    .yo-gallery-item:nth-child(2),
    .yo-gallery-item:nth-child(3) {
        width: 280px;
        height: 200px;
        transform: none;
    }

    .yo-gallery-item:hover,
    .yo-gallery-item:nth-child(1):hover,
    .yo-gallery-item:nth-child(3):hover {
        transform: translateY(-5px);
    }

    .yo-hero-stats-bar {
        flex-direction: column;
        gap: 1.5rem;
        border-radius: 24px;
    }

    .yo-features-grid,
    .yo-testimonials-grid {
        grid-template-columns: 1fr;
    }

    .yo-testimonials-grid {
        display: flex;
        flex-direction: column;
    }

}

/* Noise Texture Overlay */
.yo-noise-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1000;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}