.hero-section { margin-bottom: 80px; }

/* 首页首屏巨大方格背景 */
body::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 145vh; /* 覆盖首屏及更多区域，约到“你可以做什么”附近 */
    background-image: 
        linear-gradient(var(--glass-border) 1px, transparent 1px),
        linear-gradient(90deg, var(--glass-border) 1px, transparent 1px);
    background-size: 60px 60px; /* 方格稍微调小 */
    background-position: center top;
    z-index: -1;
    mask-image: linear-gradient(to bottom, black 60%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, black 60%, transparent 100%);
    pointer-events: none;
}

/* 首页顶部导航栏透明适配 */
.site-nav.is-transparent {
    background: transparent !important;
    backdrop-filter: none !important;
    border-bottom-color: transparent !important;
}

/* 首页板块标题样式（原 components.css 迁移并调整） */
.section-header {
    margin-bottom: 10px; /* 原为 40px */
    border-bottom: none; /* 原为 1px solid */
    padding-bottom: 10px;
}

.section-title {
    font-size: 1.8rem; /* 原为 1.2rem */
    font-weight: 600;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 15px;
    font-weight: 400;
    letter-spacing: -1px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.8rem;
    margin-bottom: 25px;
    color: var(--text-secondary);
    font-weight: 300;
    letter-spacing: -0.5px;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    line-height: 1.8;
}

.section-block { margin-bottom: 80px; }
.section-block:last-child { margin-bottom: 0; }

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 40px;
}

.feature-item-link {
    text-decoration: none;
    color: inherit;
    display: block;
    padding: 15px;
    margin: -15px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.feature-item-link:hover {
    background-color: rgba(0, 0, 0, 0.03);
    transform: translateY(-2px);
}

.feature-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
    transition: color 0.3s ease;
    display: flex;
    align-items: center;
}

.feature-title::after {
    content: "\2192";
    opacity: 0;
    margin-left: 10px;
    transform: translateX(-10px);
    transition: all 0.3s ease;
    font-weight: 400;
}

.feature-item-link:hover .feature-title { color: var(--accent-color); }
.feature-item-link:hover .feature-title::after { opacity: 1; transform: translateX(0); }

.feature-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
    transition: color 0.3s ease;
}

.feature-item-link:hover .feature-desc { color: var(--text-primary); }

.who-for-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px 60px;
}

.who-for-item {
    display: flex;
    align-items: flex-start;
}

.who-for-icon {
    color: var(--text-primary);
    margin-top: 6px;
    margin-right: 15px;
    font-size: 0.9rem;
    opacity: 0.4;
}

.who-for-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0 0 8px 0;
    color: var(--text-primary);
}

.who-for-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
}

.closing-block {
    margin-top: 120px;
    padding-top: 80px;
    border-top: 1px solid var(--accent-subtle);
}

.closing-layout {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: start;
}

.closing-label {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    margin: 0 0 20px 0;
    display: block;
}

.closing-headline {
    font-size: 2.2rem;
    font-weight: 400;
    line-height: 1.2;
    color: var(--text-primary);
    letter-spacing: -0.03em;
}

.closing-content {
    padding-top: 45px;
}

.closing-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 30px;
    max-width: 480px;
}

.closing-link {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--text-primary);
    transition: all 0.3s ease;
}

.closing-link i {
    transition: transform 0.3s ease;
}

.closing-link:hover {
    opacity: 0.7;
}

.closing-link:hover i {
    transform: translateX(5px);
}

@media (max-width: 768px) {
    .closing-block { margin-top: 80px; padding-top: 60px; }
    .closing-layout { grid-template-columns: 1fr; gap: 30px; }
    .closing-headline { font-size: 1.8rem; }
    .closing-content { padding-top: 0; }
}