:root {
    --zen-bg: #ffffff;
    --zen-text: #15141a;
    --zen-subtext: #5b5b66;
    --zen-primary: #0060df;
    --zen-accent: #ff7139;
    --zen-gray-light: #f9f9fb;
    --zen-border: #ededf0;
    --zen-max-width: 1100px;
    --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--zen-bg);
    color: var(--zen-text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* --- 极简导航 --- */
.nav-zen {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--zen-border);
    z-index: 1000;
}

.nav-container {
    max-width: var(--zen-max-width);
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-zen {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--zen-text);
}

.nav-links-zen {
    display: flex;
    gap: 2rem;
}

.nav-links-zen a {
    text-decoration: none;
    color: var(--zen-subtext);
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s;
}

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

.btn-zen-sm {
    padding: 0.5rem 1.25rem;
    border: 1px solid var(--zen-primary);
    border-radius: 4px;
    color: var(--zen-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.2s;
}

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

/* --- Hero 区域 --- */
.hero-zen {
    max-width: var(--zen-max-width);
    margin: 0 auto;
    padding: 8rem 2rem;
    text-align: center;
}

.hero-zen h1 {
    font-size: 4rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-zen p {
    font-size: 1.5rem;
    color: var(--zen-subtext);
    max-width: 700px;
    margin: 0 auto 3rem;
    line-height: 1.4;
}

.btn-zen-lg {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--zen-primary);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: background 0.2s;
}

.btn-zen-lg:hover {
    background: #0046a1;
}

/* --- 功能展示 --- */
.section-zen {
    padding: 6rem 2rem;
    border-top: 1px solid var(--zen-border);
}

.container-zen {
    max-width: var(--zen-max-width);
    margin: 0 auto;
}

.feature-row-zen {
    display: flex;
    align-items: center;
    gap: 4rem;
    margin-bottom: 8rem;
}

.feature-row-zen:last-child {
    margin-bottom: 0;
}

.feature-row-zen.reverse {
    flex-direction: row-reverse;
}

.feature-content-zen {
    flex: 1;
}

.feature-image-zen {
    flex: 1;
    background: var(--zen-gray-light);
    border-radius: 12px;
    aspect-ratio: 16/10;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--zen-border);
}

.feature-content-zen h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    letter-spacing: -0.01em;
}

.feature-content-zen p {
    font-size: 1.15rem;
    color: var(--zen-subtext);
    margin-bottom: 2rem;
}

/* --- 网格布局 --- */
.grid-zen {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

.grid-item-zen {
    text-align: left;
}

.grid-item-zen h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.grid-item-zen p {
    color: var(--zen-subtext);
}

/* --- 新增内容模块样式 --- */
.stats-row-zen {
    display: flex;
    justify-content: space-around;
    text-align: center;
    gap: 2rem;
}

.stat-item-zen h4 {
    font-size: 3rem;
    font-weight: 800;
    color: var(--zen-primary);
    margin-bottom: 0.5rem;
}

.stat-item-zen p {
    font-size: 1rem;
    color: var(--zen-subtext);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.quote-zen {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: 4rem 0;
}

.quote-zen blockquote {
    font-size: 2rem;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 2rem;
    position: relative;
}

.quote-zen blockquote::before {
    content: '"';
    font-size: 5rem;
    color: var(--zen-border);
    position: absolute;
    top: -2rem;
    left: -2rem;
}

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

.faq-item-zen {
    border-bottom: 1px solid var(--zen-border);
    padding: 1.5rem 0;
}

.faq-item-zen h4 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
}

.faq-item-zen p {
    color: var(--zen-subtext);
    display: block; /* 简化演示，直接显示内容 */
}

.cta-bottom-zen {
    text-align: center;
    padding: 8rem 2rem;
    background: var(--zen-text);
    color: white;
}

.cta-bottom-zen h2 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.cta-bottom-zen p {
    font-size: 1.2rem;
    opacity: 0.7;
    margin-bottom: 3rem;
}

/* --- 页脚 --- */
.footer-zen {
    background: var(--zen-gray-light);
    padding: 4rem 2rem;
    border-top: 1px solid var(--zen-border);
}

.footer-container {
    max-width: var(--zen-max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.footer-links-group {
    display: flex;
    gap: 4rem;
}

.footer-column h4 {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--zen-text);
    margin-bottom: 1.5rem;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 0.75rem;
}

.footer-column a {
    text-decoration: none;
    color: var(--zen-subtext);
    font-size: 0.9rem;
}

.footer-column a:hover {
    color: var(--zen-primary);
}

.footer-bottom-zen {
    max-width: var(--zen-max-width);
    margin: 4rem auto 0;
    padding-top: 2rem;
    border-top: 1px solid var(--zen-border);
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--zen-subtext);
}

/* --- 响应式 --- */
@media (max-width: 900px) {
    .stats-row-zen { flex-direction: column; gap: 3rem; }
    .feature-row-zen { flex-direction: column !important; text-align: center; gap: 2rem; }
    .hero-zen h1 { font-size: 3rem; }
    .grid-zen { grid-template-columns: 1fr; }
    .footer-container { flex-direction: column; gap: 3rem; }
}