/* CSS Reset & Variables */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary: #ff6b6b;
    --primary-dark: #e55a5a;
    --primary-light: #ff8a8a;
    --secondary: #4ade80;
    --dark: #0a0a0a;
    --dark-light: #1a1a1a;
    --gray: #888888;
    --gray-light: #f5f5f5;
    --white: #ffffff;
    --gradient: linear-gradient(135deg, var(--primary), var(--primary-light));
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
    --radius: 16px;
    --radius-lg: 24px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

img { max-width: 100%; height: auto; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }


/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

.btn-primary {
    background: var(--gradient);
    color: var(--white);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 107, 107, 0.4);
}

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

.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-img { width: 32px; height: 32px; object-fit: contain; }

.nav-menu {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: var(--gray);
    font-weight: 500;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--dark);
    transition: var(--transition);
}

/* Page Hero */
.page-hero {
    padding: 140px 0 60px;
    background: linear-gradient(180deg, #fff5f5 0%, #ffffff 100%);
    text-align: center;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.page-subtitle {
    font-size: 1.125rem;
    color: var(--gray);
}

/* Section Common */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--gray);
}

/* Content Section (Privacy, Terms) */
.content-section {
    padding: 60px 0;
}

.content-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.content-block {
    margin-bottom: 40px;
}

.content-block h2 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--dark);
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary);
}

.content-block h3 {
    font-size: 1.125rem;
    margin: 20px 0 12px;
    color: var(--dark);
}

.content-block p {
    margin-bottom: 12px;
    color: #444;
    line-height: 1.8;
}

.content-block ul {
    margin: 12px 0;
    padding-left: 24px;
}

.content-block li {
    margin-bottom: 8px;
    color: #444;
    line-height: 1.8;
    list-style: disc;
}


/* About Page */
.about-story {
    padding: 80px 0;
}

.story-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.story-text h2 {
    font-size: 2rem;
    margin-bottom: 24px;
}

.story-text p {
    margin-bottom: 16px;
    color: #444;
    line-height: 1.8;
}

.story-card {
    width: 200px;
    height: 200px;
    background: var(--gradient);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    margin: 0 auto;
    box-shadow: var(--shadow);
}

.about-values {
    background: var(--gray-light);
    padding: 80px 0;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.value-card {
    background: var(--white);
    padding: 32px 24px;
    border-radius: var(--radius);
    text-align: center;
    transition: var(--transition);
}

.value-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.value-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.value-card h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.value-card p {
    color: var(--gray);
    font-size: 0.9rem;
}

.about-mission {
    padding: 80px 0;
    text-align: center;
}

.mission-content h2 {
    font-size: 2rem;
    margin-bottom: 16px;
}

.mission-text {
    font-size: 1.25rem;
    color: var(--gray);
    margin-bottom: 40px;
}

.mission-stats {
    display: flex;
    justify-content: center;
    gap: 80px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    color: var(--gray);
}

.about-contact {
    background: var(--gray-light);
    padding: 80px 0;
    text-align: center;
}

.about-contact h2 {
    font-size: 2rem;
    margin-bottom: 40px;
}

.contact-info-grid {
    display: flex;
    justify-content: center;
    gap: 60px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    text-align: left;
}

.contact-icon {
    font-size: 2rem;
}

.contact-item h4 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.contact-item p {
    color: var(--gray);
}

/* Blog Page */
.blog-section {
    padding: 60px 0;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.blog-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.blog-image {
    height: 160px;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
}

.blog-content {
    padding: 24px;
}

.blog-tag {
    display: inline-block;
    padding: 4px 12px;
    background: #fff0f0;
    color: var(--primary);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.blog-title {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.blog-excerpt {
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 16px;
    line-height: 1.6;
}

.blog-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.blog-date {
    color: var(--gray);
    font-size: 0.85rem;
}

.blog-link {
    color: var(--primary);
    font-weight: 500;
}

.blog-pagination {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 48px;
}

.page-current,
.page-link {
    padding: 8px 16px;
    border-radius: 8px;
}

.page-current {
    background: var(--primary);
    color: var(--white);
}

.page-link {
    background: var(--gray-light);
    color: var(--dark);
}

.page-link:hover {
    background: var(--primary);
    color: var(--white);
}


/* Careers Page */
.careers-intro {
    padding: 60px 0;
}

.intro-content h2 {
    font-size: 2rem;
    margin-bottom: 16px;
}

.intro-content > p {
    color: var(--gray);
    margin-bottom: 40px;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.benefit-item {
    text-align: center;
    padding: 24px;
    background: var(--gray-light);
    border-radius: var(--radius);
}

.benefit-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.benefit-item h4 {
    font-size: 1rem;
    margin-bottom: 8px;
}

.benefit-item p {
    color: var(--gray);
    font-size: 0.85rem;
}

.careers-positions {
    background: var(--gray-light);
    padding: 80px 0;
}

.positions-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.position-card {
    background: var(--white);
    padding: 32px;
    border-radius: var(--radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.position-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.position-title {
    font-size: 1.25rem;
}

.position-tag {
    padding: 4px 12px;
    background: #fff0f0;
    color: var(--primary);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.position-info {
    display: flex;
    gap: 24px;
    margin-bottom: 16px;
    color: var(--gray);
    font-size: 0.9rem;
}

.position-desc {
    color: #444;
    margin-bottom: 20px;
    line-height: 1.6;
}

.careers-contact {
    padding: 80px 0;
    text-align: center;
}

.contact-cta h2 {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.contact-cta p {
    color: var(--gray);
}

.contact-cta a {
    color: var(--primary);
    font-weight: 600;
}

/* Footer */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 40px 0;
}

.footer-simple {
    text-align: center;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
}

.footer-links-inline {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 20px;
}

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

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

.copyright {
    color: var(--gray);
    font-size: 0.85rem;
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-4px);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle {
        display: flex;
    }

    .page-title {
        font-size: 2rem;
    }

    .story-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .mission-stats {
        flex-direction: column;
        gap: 24px;
    }

    .contact-info-grid {
        flex-direction: column;
        gap: 24px;
    }

    .blog-grid {
        grid-template-columns: 1fr;
    }

    .footer-links-inline {
        flex-wrap: wrap;
        gap: 16px;
    }
}

/* 
公众号二维码卡片 */
.mp-card {
    background: linear-gradient(135deg, #07c160 0%, #06ad56 100%);
    color: var(--white);
}

.mp-card .contact-icon {
    background: rgba(255, 255, 255, 0.2);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.mp-card .contact-title {
    color: var(--white);
}

.mp-card .contact-info {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 20px;
}

.mp-qrcode {
    width: 140px;
    height: 140px;
    background: var(--white);
    border-radius: 12px;
    padding: 8px;
    margin: 0 auto 12px;
}

.mp-qrcode img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 8px;
}

.mp-tip {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.8);
}