/* ===== style.css ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #0b0d17;
    --bg-secondary: #11142a;
    --bg-card: #181b3a;
    --text-primary: #e8eaff;
    --text-secondary: #9ca3d8;
    --accent-1: #6c5ce7;
    --accent-2: #00d2ff;
    --accent-3: #a78bfa;
    --glow: rgba(108, 92, 231, 0.35);
    --radius: 12px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--accent-2); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-3); }

img { max-width: 100%; display: block; }

::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--accent-1); border-radius: 3px; }

/* ---------- 导航 ---------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(11, 13, 23, 0.85);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(108, 92, 231, 0.15);
    transition: background var(--transition);
}
.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary) !important;
    letter-spacing: 0.5px;
}
.logo-icon { font-size: 1.3rem; color: var(--accent-2); filter: drop-shadow(0 0 6px var(--glow)); }
.nav-toggle { display: none; background: none; border: none; color: var(--text-primary); font-size: 1.5rem; cursor: pointer; padding: 4px; line-height: 1; }
.nav-menu { display: flex; gap: 24px; align-items: center; }
.nav-menu a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    position: relative;
    padding: 4px 0;
    white-space: nowrap;
}
.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-1), var(--accent-2));
    transition: width var(--transition);
}
.nav-menu a:hover::after,
.nav-menu a.active::after { width: 100%; }
.nav-menu a.active { color: var(--text-primary); }

/* 移动端导航菜单（弹出） */
@media (max-width: 768px) {
    .nav-inner { height: 56px; padding: 0 12px; }
    .nav-toggle { display: block; }
    .nav-menu {
        position: fixed;
        top: 56px;
        left: 0;
        right: 0;
        background: rgba(11, 13, 23, 0.98);
        backdrop-filter: blur(16px);
        flex-direction: column;
        gap: 0;
        padding: 8px 16px 20px;
        transform: translateY(-120%);
        opacity: 0;
        pointer-events: none;
        transition: all var(--transition);
        border-bottom: 1px solid rgba(108, 92, 231, 0.2);
        max-height: 80vh;
        overflow-y: auto;
    }
    .nav-menu.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }
    .nav-menu a {
        padding: 14px 0;
        width: 100%;
        border-bottom: 1px solid rgba(255,255,255,0.04);
        font-size: 1rem;
    }
    .nav-menu a:last-child { border-bottom: none; }
}

/* ---------- Hero ---------- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 80px 16px 60px;
    overflow: hidden;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(108,92,231,0.12) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 50%, rgba(0,210,255,0.08) 0%, transparent 60%),
        radial-gradient(ellipse at 50% 100%, rgba(167,139,250,0.06) 0%, transparent 50%);
    pointer-events: none;
}
.hero-content { position: relative; z-index: 1; max-width: 800px; text-align: center; animation: fadeUp 0.8s ease-out; }
.hero-title {
    font-size: clamp(1.8rem, 5vw, 3.5rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-2) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
    margin-bottom: 16px;
}
.hero-sub { font-size: 0.95rem; color: var(--text-secondary); max-width: 600px; margin: 0 auto 28px; line-height: 1.7; }
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 36px; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 24px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none !important;
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    color: #fff !important;
    box-shadow: 0 4px 20px rgba(108,92,231,0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(108,92,231,0.5); }
.btn-outline { border: 2px solid rgba(108,92,231,0.5); color: var(--text-primary) !important; background: transparent; }
.btn-outline:hover { border-color: var(--accent-2); background: rgba(0,210,255,0.08); transform: translateY(-2px); }
.btn-secondary { background: var(--bg-card); color: var(--text-primary) !important; border: 1px solid rgba(108,92,231,0.25); }
.btn-secondary:hover { border-color: var(--accent-1); background: rgba(108,92,231,0.1); transform: translateY(-2px); }

.hero-stats { display: flex; gap: 32px; justify-content: center; flex-wrap: wrap; }
.stat-item { text-align: center; }
.stat-num {
    display: block;
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-2), var(--accent-3));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.stat-label { font-size: 0.75rem; color: var(--text-secondary); letter-spacing: 0.5px; }

/* ---------- 通用 Section ---------- */
.section { max-width: 1200px; margin: 0 auto; padding: 48px 16px; }
.section-header { text-align: center; margin-bottom: 32px; }
.section-header h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 6px; color: var(--text-primary); }
.section-header p { color: var(--text-secondary); font-size: 0.9rem; }
.section-footer { text-align: center; margin-top: 28px; }

/* ---------- 项目卡片 ---------- */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}
.project-card {
    background: var(--bg-card);
    border: 1px solid rgba(108,92,231,0.12);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
}
.project-card:hover {
    transform: translateY(-3px);
    border-color: rgba(108,92,231,0.3);
    box-shadow: 0 6px 24px rgba(108,92,231,0.1);
}
.project-cover {
    height: 120px;
    background-size: cover;
    background-position: center;
}
.project-info {
    padding: 16px 20px 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.project-info h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
}
.project-info p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.6;
    margin-bottom: 10px;
    flex: 1;
}
.project-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}
.project-tag {
    font-size: 0.65rem;
    padding: 2px 8px;
    border-radius: 50px;
    background: rgba(108,92,231,0.2);
    color: var(--accent-3);
    font-weight: 600;
}
.btn-project {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 20px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.85rem;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none !important;
    align-self: flex-start;
    background: linear-gradient(135deg, #4facfe, #00f2fe);
    color: #fff !important;
    box-shadow: 0 3px 12px rgba(79,172,254,0.3);
}
.btn-project:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 18px rgba(79,172,254,0.5);
    color: #fff !important;
}

.project-beta {
    display: inline-block;
    background: linear-gradient(135deg, #ff8c00, #ffa500);
    color: #fff;
    font-size: 0.6rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
    vertical-align: middle;
    margin-left: 4px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

/* ---------- 服务器网格 ---------- */
.server-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.server-card {
    background: var(--bg-card);
    border: 1px solid rgba(108,92,231,0.12);
    border-radius: var(--radius);
    padding: 0;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.server-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-1), var(--accent-2));
    opacity: 0;
    transition: opacity var(--transition);
    z-index: 1;
}
.server-card:hover { transform: translateY(-4px); border-color: rgba(108,92,231,0.35); box-shadow: 0 10px 32px rgba(108,92,231,0.12); }
.server-card:hover::before { opacity: 1; }

.card-cover {
    width: 100%;
    height: 140px;
    overflow: hidden;
}
.card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.card-body {
    padding: 16px 20px 24px;
    flex: 1;
}
.server-card .server-name {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 0;
}
.server-card .server-tag { font-size: 0.65rem; padding: 2px 8px; border-radius: 50px; background: rgba(108,92,231,0.2); color: var(--accent-3); font-weight: 600; }
.server-card .server-desc { color: var(--text-secondary); font-size: 0.85rem; margin-bottom: 12px; line-height: 1.6; }
.server-card .server-meta { display: flex; gap: 12px; font-size: 0.75rem; color: var(--text-secondary); flex-wrap: wrap; }
.server-card .server-meta span { display: flex; align-items: center; gap: 4px; }
.server-card .server-link { display: inline-block; margin-top: 12px; font-weight: 600; font-size: 0.85rem; color: var(--accent-2) !important; }
.server-card .server-link:hover { color: var(--accent-3) !important; }

/* ---------- 优势卡片 ---------- */
.adv-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
}
.adv-card {
    background: var(--bg-card);
    border: 1px solid rgba(108,92,231,0.1);
    border-radius: var(--radius);
    padding: 24px 18px;
    text-align: center;
    transition: all var(--transition);
}
.adv-card:hover { transform: translateY(-3px); border-color: rgba(108,92,231,0.3); box-shadow: 0 6px 24px rgba(108,92,231,0.08); }
.adv-icon { font-size: 2rem; margin-bottom: 12px; filter: drop-shadow(0 0 10px var(--glow)); }
.adv-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 6px; }
.adv-card p { color: var(--text-secondary); font-size: 0.85rem; line-height: 1.6; }

/* ---------- 公告 ---------- */
.announce-list { max-width: 800px; margin: 0 auto; }
.announce-item {
    background: var(--bg-card);
    border-left: 4px solid var(--accent-1);
    border-radius: 0 var(--radius) var(--radius) 0;
    padding: 16px 18px;
    margin-bottom: 12px;
    transition: background var(--transition);
}
.announce-item:hover { background: rgba(24,27,58,0.8); }
.announce-item .ann-date { font-size: 0.7rem; color: var(--text-secondary); letter-spacing: 0.5px; margin-bottom: 4px; }
.announce-item .ann-title { font-weight: 600; font-size: 0.95rem; margin-bottom: 4px; }
.announce-item .ann-body { color: var(--text-secondary); font-size: 0.85rem; }

/* ---------- 子页面通用 ---------- */
.page-hero { padding: 80px 16px 40px; text-align: center; background: radial-gradient(ellipse at center, rgba(108,92,231,0.08) 0%, transparent 70%); }
.page-hero h1 { font-size: 1.8rem; font-weight: 800; margin-bottom: 8px; }
.page-hero p { color: var(--text-secondary); font-size: 0.95rem; max-width: 600px; margin: 0 auto; }

.about-content { max-width: 800px; margin: 0 auto; padding: 0 16px; }
.about-content h2 { font-size: 1.3rem; margin-top: 32px; margin-bottom: 10px; color: var(--accent-2); }
.about-content p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.8; margin-bottom: 12px; }
.about-content ul { list-style: none; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.about-content ul li { background: var(--bg-card); padding: 10px 14px; border-radius: 8px; color: var(--text-secondary); font-size: 0.85rem; display: flex; align-items: center; gap: 6px; }
@media (max-width: 480px) { .about-content ul { grid-template-columns: 1fr; } }

/* ---------- 服务器详情 ---------- */
.server-detail { max-width: 800px; margin: 0 auto; padding: 40px 16px 60px; }
.server-detail .back-link { display: inline-flex; align-items: center; gap: 4px; color: var(--text-secondary); margin-bottom: 16px; font-size: 0.85rem; }
.server-detail .back-link:hover { color: var(--accent-2); }
.server-detail .detail-card {
    background: var(--bg-card);
    border: 1px solid rgba(108,92,231,0.15);
    border-radius: var(--radius);
    padding: 24px;
}
.server-detail .detail-card h1 { font-size: 1.5rem; font-weight: 700; margin-bottom: 6px; }
.server-detail .detail-card .detail-tag { display: inline-block; font-size: 0.7rem; padding: 3px 10px; border-radius: 50px; background: rgba(108,92,231,0.2); color: var(--accent-3); font-weight: 600; margin-bottom: 14px; }
.server-detail .detail-card .detail-desc { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.8; margin-bottom: 20px; }
.server-detail .detail-card .detail-info { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 20px; }
.server-detail .detail-card .detail-info div { background: rgba(11,13,23,0.5); padding: 10px 14px; border-radius: 8px; font-size: 0.85rem; }
.server-detail .detail-card .detail-info div strong { color: var(--accent-2); }
@media (max-width: 480px) { .server-detail .detail-card .detail-info { grid-template-columns: 1fr; } }

.detail-gallery {
    width: 100%;
    max-height: 200px;
    overflow: hidden;
    border-radius: var(--radius) var(--radius) 0 0;
    margin: -24px -24px 16px -24px;
}
.detail-gallery img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}
.detail-team { margin-top: 20px; }
.detail-team h3 { font-size: 1rem; font-weight: 600; margin-bottom: 10px; color: var(--text-primary); }
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 10px;
}
.team-member {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(11,13,23,0.5);
    padding: 8px 10px;
    border-radius: 8px;
}
.team-member img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
}
.team-member strong {
    display: block;
    font-size: 0.85rem;
    color: var(--text-primary);
}
.team-member span {
    font-size: 0.7rem;
    color: var(--text-secondary);
}

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid rgba(108,92,231,0.1); padding: 32px 16px 24px; margin-top: 32px; }
.footer-inner { max-width: 1200px; margin: 0 auto; display: flex; flex-direction: column; align-items: center; gap: 12px; text-align: center; }
.footer-brand { font-size: 1.1rem; font-weight: 700; display: flex; align-items: center; gap: 6px; }
.footer-links { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }
.footer-links a { color: var(--text-secondary); font-size: 0.85rem; }
.footer-links a:hover { color: var(--accent-2); }
.footer-copy { color: var(--text-secondary); font-size: 0.75rem; }
.footer-version { margin-top: 2px; opacity: 0.6; font-size: 0.65rem; }

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ======================================================
   ===== 手机端专用覆盖：更紧凑 + 两列布局 =====
   ====================================================== */
@media (max-width: 768px) {
    /* Hero 区域 */
    .hero { padding: 60px 12px 40px; min-height: 85vh; }
    .hero-title { font-size: 1.6rem; }
    .hero-sub { font-size: 0.85rem; margin-bottom: 20px; }
    .hero-actions { gap: 8px; }
    .btn { padding: 8px 18px; font-size: 0.8rem; }
    .hero-stats { gap: 20px; }
    .stat-num { font-size: 1.4rem; }
    .stat-label { font-size: 0.65rem; }

    /* 通用 section */
    .section { padding: 32px 12px; }
    .section-header { margin-bottom: 20px; }
    .section-header h2 { font-size: 1.2rem; }

    /* ===== 所有卡片网格改为两列 ===== */
    .project-grid,
    .server-grid,
    .adv-grid {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    /* 项目卡片更小 */
    .project-cover { height: 80px; }
    .project-info { padding: 10px 12px 14px; }
    .project-info h3 { font-size: 0.9rem; }
    .project-info p { font-size: 0.75rem; margin-bottom: 6px; }
    .project-tag { font-size: 0.55rem; padding: 1px 6px; }
    .btn-project { padding: 6px 14px; font-size: 0.75rem; }
    .project-beta { font-size: 0.5rem; padding: 1px 4px; }

    /* 服务器卡片更小 */
    .card-cover { height: 100px; }
    .card-body { padding: 10px 12px 16px; }
    .server-card .server-name { font-size: 0.95rem; gap: 4px; }
    .server-card .server-tag { font-size: 0.55rem; padding: 1px 6px; }
    .server-card .server-desc { font-size: 0.75rem; margin-bottom: 8px; }
    .server-card .server-meta { font-size: 0.65rem; gap: 8px; }
    .server-card .server-link { font-size: 0.75rem; margin-top: 8px; }

    /* 优势卡片更小 */
    .adv-card { padding: 16px 12px; }
    .adv-icon { font-size: 1.5rem; margin-bottom: 8px; }
    .adv-card h3 { font-size: 0.85rem; }
    .adv-card p { font-size: 0.75rem; }

    /* 公告 */
    .announce-item { padding: 12px 14px; }
    .announce-item .ann-date { font-size: 0.6rem; }
    .announce-item .ann-title { font-size: 0.85rem; }
    .announce-item .ann-body { font-size: 0.75rem; }

    /* 子页面通用 */
    .page-hero { padding: 60px 12px 30px; }
    .page-hero h1 { font-size: 1.4rem; }
    .page-hero p { font-size: 0.85rem; }

    /* 服务器详情 */
    .server-detail { padding: 30px 12px 40px; }
    .server-detail .detail-card { padding: 16px; }
    .detail-gallery { margin: -16px -16px 12px -16px; max-height: 140px; }
    .detail-gallery img { height: 140px; }
    .detail-card h1 { font-size: 1.2rem; }
    .detail-card .detail-desc { font-size: 0.8rem; }
    .team-grid { grid-template-columns: 1fr 1fr; }
    .team-member { padding: 6px 8px; }
    .team-member img { width: 28px; height: 28px; }
    .team-member strong { font-size: 0.75rem; }
    .team-member span { font-size: 0.6rem; }
}

/* 极小屏幕（360px 以下）回退到单列 */
@media (max-width: 420px) {
    .project-grid,
    .server-grid,
    .adv-grid {
        grid-template-columns: 1fr;
    }
    .hero-title { font-size: 1.3rem; }
    .hero-sub { font-size: 0.75rem; }
    .btn { padding: 6px 14px; font-size: 0.75rem; }
}