/* intro.css - 游戏介绍页 */

/* 页面标题区 */
.page-header {
    position: relative;
    height: 280px;
    display: flex;
    align-items: center;
    overflow: hidden;
    color: #fff;
}
.page-header-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    filter: brightness(0.35);
}
.page-header-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(16,152,173,0.7), rgba(31,78,61,0.5));
}
.page-header-content { position: relative; z-index: 1; text-align: center; width: 100%; }
.page-header h1 {
    font-size: 42px;
    letter-spacing: 4px;
    text-shadow: 0 4px 20px rgba(0,0,0,0.5);
}
.page-header h1 i { color: var(--color-accent-light); margin-right: 12px; }
.page-header p {
    font-size: 16px;
    opacity: 0.9;
    margin-top: 10px;
    letter-spacing: 4px;
}

/* 概述 */
.intro-overview { background: #fff; }
.intro-overview-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 50px;
    align-items: center;
}
.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}
.info-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-primary);
    transition: var(--transition);
}
.info-item:hover { transform: translateX(4px); background: var(--color-primary-soft); }
.info-item > i {
    font-size: 22px;
    color: var(--color-primary);
    width: 32px;
    text-align: center;
    flex-shrink: 0;
}
.info-item strong { display: block; font-size: 12px; color: var(--color-text-light); font-weight: 500; }
.info-item span { font-size: 14px; color: var(--color-text); font-weight: 600; }

.intro-desc {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.9;
    background: var(--color-bg);
    padding: 18px 20px;
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-accent);
}

.intro-overview-img { position: relative; }
.intro-overview-img img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 3px solid var(--color-secondary);
}
.intro-img-tag {
    position: absolute;
    top: 16px; left: -10px;
    background: var(--color-accent);
    color: #fff;
    padding: 8px 18px;
    font-size: 13px;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* 核心玩法 */
.intro-gameplay { background: var(--color-bg); }
.gp-cards { display: flex; flex-direction: column; gap: 30px; }
.gp-card {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 30px;
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}
.gp-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.gp-card.reverse { grid-template-columns: 1.2fr 1fr; }
.gp-card.reverse .gp-card-img { order: 2; }
.gp-card.reverse .gp-card-body { order: 1; }
.gp-card-img { overflow: hidden; }
.gp-card-img img {
    width: 100%; height: 100%;
    object-fit: cover;
    min-height: 240px;
    transition: transform .5s ease;
}
.gp-card:hover .gp-card-img img { transform: scale(1.06); }
.gp-card-body {
    padding: 30px 32px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.gp-num {
    font-size: 42px;
    font-weight: 900;
    color: var(--color-primary);
    opacity: 0.18;
    line-height: 1;
    margin-bottom: 12px;
}
.gp-card-body h3 {
    font-size: 22px;
    color: var(--color-text);
    margin-bottom: 14px;
}
.gp-card-body p {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.9;
    margin-bottom: 16px;
}
.gp-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.gp-tags span {
    background: var(--color-primary-soft);
    color: var(--color-primary);
    font-size: 12px;
    padding: 4px 12px;
    border-radius: 12px;
    font-weight: 600;
}

/* 核心卖点 */
.intro-features { background: #fff; }
.feat-list { display: flex; flex-direction: column; gap: 20px; }
.feat-row {
    display: grid;
    grid-template-columns: 80px 1fr 300px;
    gap: 24px;
    align-items: center;
    padding: 20px 24px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-primary);
    transition: var(--transition);
}
.feat-row.feat-row-alt { border-left: none; border-right: 4px solid var(--color-accent); grid-template-columns: 300px 1fr 80px; }
.feat-row:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.feat-icon-box {
    width: 70px; height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    flex-shrink: 0;
    box-shadow: 0 4px 14px rgba(16,152,173,0.3);
}
.feat-row-body h3 { font-size: 18px; color: var(--color-secondary); margin-bottom: 8px; }
.feat-row-body p { font-size: 13px; color: var(--color-text-light); line-height: 1.8; }
.feat-row-img { border-radius: var(--radius-md); overflow: hidden; height: 130px; }
.feat-row-img img { width: 100%; height: 100%; object-fit: cover; }

/* 美术风格 */
.intro-art { background: var(--color-bg); }
.art-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.art-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}
.art-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--color-primary); }
.art-img { height: 160px; overflow: hidden; }
.art-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.art-card:hover .art-img img { transform: scale(1.08); }
.art-info { padding: 18px 16px; text-align: center; }
.art-info i { font-size: 26px; color: var(--color-primary); margin-bottom: 8px; }
.art-info h4 { font-size: 15px; color: var(--color-text); margin-bottom: 4px; }
.art-info p { font-size: 12px; color: var(--color-text-light); line-height: 1.6; }

/* 实名认证 */
.intro-realname { background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-dark) 100%); color: #fff; }
.realname-box { display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px; align-items: center; }
.realname-left img {
    width: 100%;
    border-radius: var(--radius-lg);
    border: 3px solid rgba(255,255,255,0.15);
    box-shadow: 0 12px 30px rgba(0,0,0,0.3);
}
.realname-right h2 { font-size: 28px; margin-bottom: 16px; letter-spacing: 1px; }
.realname-right h2 i { color: var(--color-orange); margin-right: 8px; }
.realname-right > p { font-size: 14px; opacity: 0.85; margin-bottom: 18px; line-height: 1.8; }
.realname-right ul { margin-bottom: 24px; }
.realname-right ul li {
    font-size: 14px;
    opacity: 0.9;
    margin-bottom: 10px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    line-height: 1.7;
}
.realname-right ul li i { color: var(--color-primary-light); margin-top: 4px; flex-shrink: 0; }

/* 滚动动画 */
.fade-up { opacity: 0; transform: translateY(24px); transition: all .6s ease; }
.fade-up.in-view { opacity: 1; transform: translateY(0); }

/* 响应式 */
@media (max-width: 900px) {
    .page-header h1 { font-size: 32px; }
    .intro-overview-grid { grid-template-columns: 1fr; gap: 30px; }
    .info-grid { grid-template-columns: 1fr; }
    .gp-card, .gp-card.reverse { grid-template-columns: 1fr; }
    .gp-card.reverse .gp-card-img { order: unset; }
    .gp-card.reverse .gp-card-body { order: unset; }
    .gp-card-img img { min-height: 200px; }
    .feat-row, .feat-row.feat-row-alt {
        grid-template-columns: 1fr;
        gap: 16px;
        text-align: center;
    }
    .feat-icon-box { margin: 0 auto; }
    .feat-row-img { height: 180px; }
    .art-grid { grid-template-columns: repeat(2, 1fr); }
    .realname-box { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
    .art-grid { grid-template-columns: 1fr; }
    .page-header h1 { font-size: 26px; }
}