/* ==========================================================================
   首页专用样式（index.html / index_en.html）
   说明：通用排版、Hero、按钮、卡片、页脚等均由 css/main.css 提供，
        这里只放首页独有的区块样式。
   ========================================================================== */

/* ---------- 服务器概览卡片 ---------- */
.intro-card
{
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: minmax(160px, 280px) 1fr;
    gap: 24px 40px;
    align-items: center;
    padding: 40px;
    background: #fff;
    border-radius: var(--uc-radius);
    box-shadow: var(--uc-shadow-lg);
}

.intro-logo
{
    width: 100%;
    max-width: 280px;
    height: auto;
    margin: 0 auto;
    border-radius: 12px;
    box-shadow: 0 10px 24px rgba(15, 35, 60, 0.14);
    image-rendering: pixelated;
}

.intro-body h2
{
    margin: 0 0 16px;
}

.intro-body p
{
    margin: 10px 0;
    color: #4a5b6b;
    line-height: 1.8;
}

/* ---------- 数据格 ---------- */
.stats
{
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    margin-top: 6px;
    padding-top: 30px;
    border-top: 1px solid var(--uc-line);
}

.stat
{
    padding: 16px 10px;
    text-align: center;
    background: #f7fafd;
    border: 1px solid var(--uc-line);
    border-radius: var(--uc-radius-sm);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.stat:hover
{
    transform: translateY(-3px);
    box-shadow: 0 10px 22px rgba(15, 35, 60, 0.08);
}

.stat strong
{
    display: block;
    color: var(--uc-accent);
    font-size: 1.35rem;
    line-height: 1.4;
}

.stat span
{
    display: block;
    margin-top: 4px;
    color: var(--uc-muted);
    font-size: 0.88rem;
}

/* ---------- 特色卡片 ---------- */
.feature-grid
{
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
}

.feature-card
{
    position: relative;
    padding: 30px 28px;
    background: #fff;
    border: 1px solid var(--uc-line);
    border-radius: var(--uc-radius);
    box-shadow: var(--uc-shadow);
    transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
}

.feature-card::before
{
    content: "";
    position: absolute;
    top: 0;
    left: 28px;
    right: 28px;
    height: 3px;
    background: linear-gradient(90deg, var(--uc-accent), var(--uc-green));
    border-radius: 0 0 3px 3px;
    opacity: 0;
    transition: opacity 0.28s ease;
}

.feature-card:hover
{
    transform: translateY(-6px);
    border-color: #cfe4f6;
    box-shadow: var(--uc-shadow-lg);
}

.feature-card:hover::before
{
    opacity: 1;
}

.feature-icon
{
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    margin-bottom: 18px;
    font-size: 1.5rem;
    line-height: 1;
    background: linear-gradient(135deg, #eaf4fd, #f0f8ec);
    border-radius: 14px;
}

.feature-card h3
{
    margin: 0 0 12px;
    font-size: 1.2rem;
    line-height: 1.5;
}

.feature-card p
{
    margin: 0;
    color: #55677a;
    line-height: 1.75;
}

/* ---------- 底部行动号召 ---------- */
.cta-band
{
    padding: 56px 40px;
    text-align: center;
    color: #fff;
    background: linear-gradient(135deg, #2b6cb0 0%, #3498db 48%, #4e9a2b 100%);
    border-radius: var(--uc-radius);
    box-shadow: var(--uc-shadow-lg);
}

.cta-band h2
{
    margin: 0 0 12px;
    color: #fff;
    font-size: clamp(1.4rem, 3vw, 1.9rem);
}

.cta-band p
{
    margin: 0;
    color: rgba(255, 255, 255, 0.9);
}

.cta-band .btn-primary
{
    color: var(--uc-accent-dark);
    background: #fff;
    border-color: #fff;
    box-shadow: 0 12px 26px rgba(0, 0, 0, 0.18);
}

.cta-band .btn-primary:hover
{
    color: var(--uc-accent-dark);
    background: #f2f8fd;
    box-shadow: 0 16px 30px rgba(0, 0, 0, 0.24);
}

.cta-band .btn-secondary
{
    color: #fff;
    background-color: transparent;
    border-color: rgba(255, 255, 255, 0.75);
}

.cta-band .btn-secondary:hover
{
    color: #fff;
    background-color: rgba(255, 255, 255, 0.18);
}

/* ---------- 响应式 ---------- */
@media (max-width: 900px)
{
    .intro-card
    {
        grid-template-columns: 1fr;
        padding: 32px 26px;
        text-align: center;
    }

    .intro-logo
    {
        max-width: 220px;
    }

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

@media (max-width: 768px)
{
    .intro-card
    {
        padding: 26px 20px;
    }

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

    .cta-band
    {
        padding: 44px 24px;
    }
}