/* ===== 薯芯云 - 夜间科技模式 ===== */
:root {
    --bg: #0a0e17;
    --bg-2: #0c111e;
    --bg-3: #0e1424;
    --card: #111827;
    --border: #1a2332;
    --border-light: #253044;
    --text: #e8edf5;
    --text-2: #8b98ab;
    --text-3: #5a6a80;
    --primary: #3b82f6;
    --primary-2: #60a5fa;
    --accent: #06b6d4;
    --glow: rgba(59, 130, 246, 0.12);
    --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', monospace;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

/* ==================== 导航 ==================== */
.site-header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 999;
    background: rgba(10, 14, 23, 0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}
.header-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 60px;
}
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo-img { width: 30px; height: 30px; border-radius: 6px; }
.logo-text { color: var(--text); font-size: 16px; font-weight: 600; letter-spacing: 1px; }
.main-nav { display: flex; gap: 2px; }
.nav-link {
    color: var(--text-2); text-decoration: none; font-size: 13px;
    padding: 5px 14px; border-radius: 3px; transition: all .2s;
    letter-spacing: 0.5px;
}
.nav-link:hover { color: var(--primary-2); background: rgba(59,130,246,0.08); }

/* ==================== 首页顶部横幅 ==================== */
.hero-banner {
    position: relative;
    padding: 130px 0 80px;
    overflow: hidden;
    border-bottom: 1px solid var(--border);
    background: var(--bg);
}
.hero-bg-grid {
    position: absolute; inset: 0; pointer-events: none;
    background-image: 
        linear-gradient(rgba(59,130,246,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59,130,246,0.04) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}
.hero-bg-glow {
    position: absolute; border-radius: 50%; pointer-events: none;
    filter: blur(80px);
}
.hero-bg-glow-1 { width: 400px; height: 400px; background: var(--glow); top: -100px; left: -100px; }
.hero-bg-glow-2 { width: 300px; height: 300px; background: rgba(6,182,212,0.05); bottom: -80px; right: -60px; }
.hero-particles { position: absolute; inset: 0; pointer-events: none; z-index: 0; }
.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary-2);
    border-radius: 50%;
    animation: particle-float 15s infinite;
}
.particle:nth-child(1) { top: 20%; left: 15%; }
.particle:nth-child(2) { top: 50%; left: 75%; animation-delay: 3s; }
.particle:nth-child(3) { top: 35%; left: 50%; animation-delay: 6s; }
.particle:nth-child(4) { top: 65%; left: 25%; animation-delay: 9s; }
.particle:nth-child(5) { top: 40%; left: 85%; animation-delay: 12s; }
.particle:nth-child(6) { top: 70%; left: 55%; animation-delay: 5s; }
@keyframes particle-float {
    0%, 100% { transform: translateY(0); opacity: 0.2; }
    50% { transform: translateY(-30px); opacity: 0.8; }
}

.hero-banner-content {
    position: relative; z-index: 1;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}
.hero-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 20px;
}
.hero-brand-logo {
    width: 48px;
    height: 48px;
    border-radius: 10px;
}
.logo-float { animation: logo-float 3s ease-in-out infinite; }
@keyframes logo-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}
.hero-brand-text { text-align: left; }
.hero-brand-label {
    font-size: 9px;
    color: var(--text-3);
    letter-spacing: 3px;
    font-family: var(--font-mono);
    display: block;
    margin-bottom: 2px;
}
.hero-brand-name {
    font-size: 36px;
    font-weight: 700;
    letter-spacing: 4px;
    color: var(--text);
}
.accent-dot { color: var(--primary); }
.hero-banner-desc {
    font-size: 13px;
    color: var(--text-2);
    letter-spacing: 3px;
    margin-bottom: 30px;
}
.hero-banner-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}
.btn-main {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    background: var(--primary);
    color: #fff;
    font-size: 13px;
    font-weight: 500;
    border-radius: 3px;
    text-decoration: none;
    letter-spacing: 1px;
    transition: all .25s;
    box-shadow: 0 0 18px rgba(59,130,246,0.3);
}
.btn-main:hover { background: var(--primary-2); box-shadow: 0 0 28px rgba(59,130,246,0.5); }
.btn-outline-main {
    display: inline-flex;
    align-items: center;
    padding: 10px 20px;
    border: 1px solid var(--border-light);
    color: var(--text-2);
    font-size: 13px;
    border-radius: 3px;
    text-decoration: none;
    letter-spacing: 1px;
    transition: all .25s;
}
.btn-outline-main:hover { border-color: var(--primary); color: var(--primary-2); }
.btn-shine {
    position: relative;
    overflow: hidden;
}
.btn-shine::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -80%;
    width: 60%;
    height: 200%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transform: rotate(25deg);
    transition: all 0.6s;
}
.btn-shine:hover::after { left: 120%; }

/* ==================== 平台数据 ==================== */
.stats-block {
    padding: 50px 0;
    background: var(--bg-2);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.stats-block-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 50px;
}
.stats-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}
.stats-num {
    font-size: 36px;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--primary-2);
}
.stats-suffix {
    font-size: 16px;
    color: var(--primary-2);
    font-weight: 600;
}
.stats-label {
    font-size: 10px;
    color: var(--text-3);
    letter-spacing: 2px;
}
.stats-sep {
    width: 1px;
    height: 40px;
    background: var(--border-light);
}

/* ==================== 核心优势 ==================== */
.features-block {
    padding: 60px 0;
    background: var(--bg);
}
.block-head {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 35px;
}
.block-tag {
    font-size: 10px;
    color: var(--primary);
    letter-spacing: 3px;
    font-family: var(--font-mono);
}
.block-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--text);
    letter-spacing: 2px;
}
.block-line {
    width: 30px;
    height: 1px;
    background: var(--border-light);
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
}
.feature-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 24px;
    text-align: center;
    transition: all .3s ease;
}
.card-hover:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(59,130,246,0.15);
}
.feature-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 10px;
    transition: transform 0.3s;
}
.feature-card:hover .feature-icon { transform: scale(1.15); }
.feature-icon.blue { background: rgba(59,130,246,0.1); color: #60a5fa; }
.feature-icon.green { background: rgba(34,197,94,0.1); color: #4ade80; }
.feature-icon.purple { background: rgba(147,51,234,0.1); color: #c084fc; }
.feature-icon.orange { background: rgba(245,158,11,0.1); color: #fbbf24; }
.feature-card h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 4px;
}
.feature-card p {
    font-size: 11px;
    color: var(--text-2);
}

/* 图标动画 */
.icon-float { animation: icon-float 2.5s ease-in-out infinite; }
@keyframes icon-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}
.icon-pulse { animation: icon-pulse 2s ease-in-out infinite; }
@keyframes icon-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.08); box-shadow: 0 0 16px rgba(34,197,94,0.2); }
}
.icon-clock-rotate { animation: icon-clock-rotate 4s linear infinite; }
@keyframes icon-clock-rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
.icon-bounce { animation: icon-bounce 1.8s ease-in-out infinite; }
@keyframes icon-bounce {
    0%, 100% { transform: translateY(0); }
    40% { transform: translateY(-6px); }
    60% { transform: translateY(-3px); }
}

/* ==================== 关于薯芯云（底部） ==================== */
.about-bottom {
    padding: 60px 0;
    background: var(--bg-2);
    border-top: 1px solid var(--border);
}
.about-bottom-inner {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}
.about-bottom-head {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 16px;
}
.about-bottom-text {
    font-size: 13px;
    color: var(--text-2);
    line-height: 1.8;
    margin-bottom: 20px;
}
.about-bottom-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 30px;
}
.service-tag {
    font-size: 11px;
    color: var(--primary-2);
    background: rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.2);
    padding: 5px 14px;
    border-radius: 16px;
    letter-spacing: 0.5px;
    transition: all .3s;
}
.tag-hover:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    box-shadow: 0 0 16px rgba(59,130,246,0.4);
    transform: translateY(-2px);
}
.about-bottom-cta {
    margin-top: 10px;
}

/* ==================== AOS 动画 ==================== */
[data-aos] {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.7s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: opacity, transform;
}
[data-aos="fade-down"] { transform: translateY(-30px); }
[data-aos="fade-right"] { transform: translateX(-40px); }
[data-aos="fade-left"] { transform: translateX(40px); }
[data-aos="zoom-in"] { transform: scale(0.8); }
[data-aos="flip-up"] { transform: perspective(600px) rotateX(40deg); }
[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0) translateX(0) scale(1) perspective(600px) rotateX(0);
}

/* ==================== 资源中心 Hero ==================== */
.resources-hero {
    position: relative;
    padding: 140px 0 80px;
    overflow: hidden;
    border-bottom: 1px solid var(--border);
    background: var(--bg);
    min-height: 60vh;
    display: flex;
    align-items: center;
}
.resources-hero .hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    width: 100%;
}
.resources-hero .hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 4px;
    color: var(--primary-2);
    margin-bottom: 20px;
}
.resources-hero .hero-title {
    font-size: 48px;
    font-weight: 700;
    letter-spacing: 6px;
    margin-bottom: 10px;
    color: var(--text);
}
.resources-hero .hero-desc {
    font-size: 14px;
    color: var(--text-2);
    letter-spacing: 3px;
}

/* ==================== 资源中心 Section ==================== */
#notices.section,
#hot-sites.section,
#documents.section,
#sources.section {
    padding: 80px 0;
}

/* Section 头部 - 去掉菱形 */
.section-head-right .section-diamond {
    display: none;
}
.section-head-right .section-line {
    width: 60px;
    height: 1px;
    background: linear-gradient(90deg, var(--border-light), transparent);
}

/* Section 序号 - 第一版风格 */
.section-index {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--primary);
    border: 1px solid var(--border-light);
    padding: 4px 10px;
    border-radius: 3px;
    letter-spacing: 1px;
    font-weight: 500;
}
.section-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 35px;
    position: relative;
    z-index: 1;
}
.section-head-left {
    display: flex;
    align-items: center;
    gap: 14px;
}
.section-title {
    font-size: 22px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--text);
}
.section-sub {
    font-size: 10px;
    color: var(--text-3);
    letter-spacing: 3px;
    font-family: var(--font-mono);
    margin-top: 2px;
}

/* 面板 - 去掉四角边框 */
.notice-panel,
.source-panel {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
    position: relative;
    z-index: 1;
}
.panel-corner {
    display: none !important;
}

/* 通知列表 */
.notice-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 18px 22px;
    border-bottom: 1px solid var(--border);
    transition: all .25s;
    cursor: pointer;
}
.notice-item:last-child { border-bottom: none; }
.notice-item:hover {
    background: rgba(59, 130, 246, 0.03);
}
.notice-left {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
    width: 36px;
}
.notice-num {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-3);
    letter-spacing: 1px;
}
.notice-ico {
    width: 28px;
    height: 28px;
    border-radius: 4px;
    background: rgba(59, 130, 246, 0.08);
    color: var(--primary-2);
    display: flex;
    align-items: center;
    justify-content: center;
}
.notice-main { flex: 1; min-width: 0; }
.notice-top {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 4px;
}
.notice-title {
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
}
.tag-alert {
    font-size: 10px;
    color: #f87171;
    background: rgba(248, 113, 113, 0.08);
    padding: 2px 8px;
    border-radius: 3px;
    letter-spacing: 1px;
}
.notice-text {
    font-size: 12px;
    color: var(--text-2);
}
.notice-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 6px;
    flex-shrink: 0;
    padding-top: 2px;
}
.notice-time {
    font-size: 11px;
    color: var(--text-3);
    font-family: var(--font-mono);
}
.notice-arrow {
    color: var(--text-3);
    font-size: 18px;
    line-height: 1;
    transition: all .2s;
}
.notice-item:hover .notice-arrow {
    color: var(--primary-2);
    transform: translateX(3px);
}

/* 网站卡片 */
.site-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 20px;
    position: relative;
    z-index: 1;
}
.site-card {
    display: block;
    text-decoration: none;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 20px;
    transition: all .3s;
}
.site-card:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.12);
}
.site-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
}
.site-ico {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: var(--bg);
    border: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    font-size: 16px;
    font-weight: 700;
    color: var(--primary-2);
}
.site-ico img { width: 100%; height: 100%; object-fit: cover; }
.site-idx {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-3);
    letter-spacing: 1px;
}
.site-name {
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 4px;
}
.site-desc {
    font-size: 12px;
    color: var(--text-2);
    margin-bottom: 14px;
}
.site-card-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.site-link-text {
    font-size: 12px;
    color: var(--text-3);
    letter-spacing: 1px;
    transition: color .2s;
}
.site-card:hover .site-link-text { color: var(--primary-2); }

/* 文档卡片 */
.doc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    position: relative;
    z-index: 1;
}
.doc-card {
    display: block;
    text-decoration: none;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 20px;
    transition: all .3s;
}
.doc-card:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.12);
}
.doc-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}
.doc-logo-wrap {
    width: 36px;
    height: 36px;
    border-radius: 6px;
    background: var(--bg);
    border: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.doc-logo { width: 100%; height: 100%; object-fit: cover; }
.doc-idx {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-3);
    letter-spacing: 1px;
}
.doc-name {
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 4px;
}
.doc-desc {
    font-size: 12px;
    color: var(--text-2);
    margin-bottom: 14px;
}
.doc-card-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}
.doc-date {
    font-size: 10px;
    color: var(--text-3);
    font-family: var(--font-mono);
}
.doc-open {
    font-size: 12px;
    color: var(--text-3);
    transition: color .2s;
}
.doc-card:hover .doc-open { color: var(--primary-2); }

/* 源码列表 */
.source-row {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 22px;
    text-decoration: none;
    border-bottom: 1px solid var(--border);
    transition: all .25s;
}
.source-row:last-child { border-bottom: none; }
.source-row:hover {
    background: rgba(59, 130, 246, 0.03);
}
.source-idx {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-3);
    flex-shrink: 0;
}
.source-symbol {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--primary);
    flex-shrink: 0;
}
.source-info { flex: 1; min-width: 0; }
.source-info h3 {
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
}
.source-info span {
    font-size: 11px;
    color: var(--text-3);
    font-family: var(--font-mono);
}
.source-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--primary-2);
    border: 1px solid var(--border-light);
    padding: 5px 12px;
    border-radius: 3px;
    transition: all .2s;
}
.source-row:hover .source-btn {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    box-shadow: 0 0 12px rgba(59,130,246,0.3);
}

/* ==================== 空状态 ==================== */
.empty-box {
    text-align: center;
    padding: 40px;
    color: var(--text-3);
    grid-column: 1 / -1;
    width: 100%;
}
.empty-symbol {
    font-size: 20px;
    display: block;
    margin-bottom: 8px;
    color: var(--border-light);
}
.empty-box p {
    font-size: 11px;
    letter-spacing: 2px;
}

/* ==================== 通知弹窗 ==================== */
.notice-popup-overlay {
    position: fixed;
    inset: 0;
    z-index: 3000;
    background: rgba(10, 14, 23, 0.85);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.notice-popup-box {
    background: var(--card);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    max-width: 520px;
    width: 100%;
    max-height: 75vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5);
    transform: scale(0.92);
    opacity: 0;
    transition: all 0.25s;
    position: relative;
    overflow: hidden;
}
.notice-popup-box.show { transform: scale(1); opacity: 1; }
.notice-popup-box::before {
    content: '';
    position: absolute;
    top: -1px; left: 20px; right: 20px;
    height: 1px;
    background: var(--primary);
}
.notice-popup-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 16px 18px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}
.notice-popup-title { display: flex; align-items: center; gap: 10px; min-width: 0; }
.notice-popup-symbol { color: var(--primary); font-size: 13px; flex-shrink: 0; }
.notice-popup-title h3 {
    font-size: 15px; font-weight: 600;
    color: var(--text); letter-spacing: 1px;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.notice-popup-x {
    background: none; border: none;
    color: var(--text-3); cursor: pointer;
    font-size: 16px; padding: 4px 8px;
    border-radius: 4px; transition: all 0.2s;
    flex-shrink: 0; line-height: 1;
}
.notice-popup-x:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.notice-popup-body {
    padding: 18px;
    overflow-y: auto;
    font-size: 13px;
    color: var(--text-2);
    line-height: 1.8;
    white-space: pre-wrap;
    word-wrap: break-word;
    flex: 1;
}
.notice-popup-body::-webkit-scrollbar { width: 4px; }
.notice-popup-body::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 2px; }
.notice-popup-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 12px 18px;
    border-top: 1px solid var(--border);
    font-size: 11px; color: var(--text-3);
    font-family: var(--font-mono);
    flex-shrink: 0;
}

/* ==================== 联系我们 ==================== */
.contact-hero {
    position: relative;
    padding: 110px 0 50px;
    overflow: hidden;
    border-bottom: 1px solid var(--border);
    background: var(--bg);
}
.contact-section { padding: 40px 0 60px; }
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    position: relative;
    z-index: 1;
    max-width: 960px;
    margin: 0 auto;
}
.contact-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 28px 24px;
    text-align: center;
    transition: all .3s;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.contact-card:hover {
    border-color: var(--border-light);
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}
.contact-card-head {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 14px;
}
.contact-icon {
    width: 44px; height: 44px;
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 22px; flex-shrink: 0;
}
.contact-icon.wechat { background: rgba(7,193,96,0.12); color: #07c160; }
.contact-icon.qq { background: rgba(59,130,246,0.12); color: #3b82f6; }
.contact-icon.bili { background: rgba(251,114,153,0.12); color: #fb7299; }
.contact-badge {
    font-size: 10px;
    color: var(--text-3);
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 3px 8px;
    border-radius: 12px;
    letter-spacing: 1px;
}
.contact-name {
    font-size: 17px; font-weight: 600;
    color: var(--text); margin-bottom: 6px; letter-spacing: 1px;
}
.contact-desc { font-size: 12px; color: var(--text-3); margin-bottom: 18px; }
.qr-wrapper {
    display: flex; justify-content: center; align-items: center;
    padding: 12px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 16px;
    width: 176px; height: 176px;
    flex-shrink: 0;
}
.qr-wrapper img, .qr-wrapper canvas {
    display: block;
    width: 150px; height: 150px;
    border-radius: 4px;
}
.contact-link-btn {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 6px;
    padding: 9px 20px;
    border-radius: 4px;
    font-size: 12px; font-weight: 500;
    text-decoration: none; letter-spacing: 1px;
    transition: all .25s;
    width: 176px; flex-shrink: 0;
}
.qq-btn { background: rgba(59,130,246,0.1); color: #60a5fa; border: 1px solid rgba(59,130,246,0.3); }
.qq-btn:hover { background: #3b82f6; color: #fff; border-color: #3b82f6; box-shadow: 0 0 16px rgba(59,130,246,0.4); }
.bili-btn { background: rgba(251,114,153,0.1); color: #fb7299; border: 1px solid rgba(251,114,153,0.3); }
.bili-btn:hover { background: #fb7299; color: #fff; border-color: #fb7299; box-shadow: 0 0 16px rgba(251,114,153,0.4); }

/* ==================== 提示弹窗 ==================== */
.contact-tips-overlay {
    position: fixed;
    inset: 0;
    z-index: 4000;
    background: rgba(10,14,23,0.85);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.contact-tips-box {
    background: var(--card);
    border: 1px solid var(--border-light);
    border-radius: 10px;
    max-width: 420px;
    width: 100%;
    box-shadow: 0 25px 60px rgba(0,0,0,0.5);
    transform: scale(0.92);
    opacity: 0;
    transition: all 0.25s;
    position: relative;
    overflow: hidden;
}
.contact-tips-box.show { transform: scale(1); opacity: 1; }
.contact-tips-head {
    display: flex; align-items: center; gap: 10px;
    padding: 16px 18px;
    border-bottom: 1px solid var(--border);
}
.contact-tips-icon {
    width: 32px; height: 32px;
    border-radius: 8px;
    background: rgba(59,130,246,0.1);
    color: var(--primary-2);
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.contact-tips-head h3 {
    font-size: 15px; font-weight: 600;
    color: var(--text); flex: 1; letter-spacing: 1px;
}
.contact-tips-close {
    background: none; border: none;
    color: var(--text-3); cursor: not-allowed;
    padding: 4px 8px; border-radius: 4px;
    transition: all 0.2s; opacity: 0.4;
}
.contact-tips-close.enabled { cursor: pointer; opacity: 1; color: var(--text-2); }
.contact-tips-close.enabled:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.contact-tips-body {
    padding: 18px;
    display: flex; flex-direction: column; gap: 12px;
}
.tips-item {
    display: flex; align-items: flex-start; gap: 10px;
    font-size: 13px; color: var(--text-2); line-height: 1.5;
}
.tips-dot {
    width: 6px; height: 6px; border-radius: 50%;
    margin-top: 7px; flex-shrink: 0;
}
.tips-dot.green { background: #4ade80; box-shadow: 0 0 8px rgba(74,222,128,0.4); }
.tips-dot.blue { background: var(--primary-2); box-shadow: 0 0 8px rgba(59,130,246,0.4); }
.tips-dot.orange { background: #fbbf24; box-shadow: 0 0 8px rgba(251,191,36,0.4); }
.tips-countdown {
    text-align: center;
    font-size: 12px; color: var(--text-3);
    padding-top: 8px;
    border-top: 1px solid var(--border);
    letter-spacing: 1px;
}
.tips-countdown.ready { color: #4ade80; }

/* ==================== 页脚 ==================== */
.site-footer {
    background: var(--bg-2); border-top: 1px solid var(--border);
    padding: 24px 0;
}
.footer-content { display: flex; align-items: center; justify-content: space-between; }
.footer-info { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--text-3); }
.footer-logo { width: 20px; height: 20px; border-radius: 4px; }
.footer-links { display: flex; gap: 18px; }
.footer-links a {
    color: var(--text-3); text-decoration: none; font-size: 11px;
    letter-spacing: 1px; transition: color .2s;
}
.footer-links a:hover { color: var(--primary-2); }

/* ==================== 响应式 ==================== */
@media (max-width: 768px) {
    .hero-banner { padding: 90px 0 50px; }
    .hero-brand-name { font-size: 28px; letter-spacing: 3px; }
    .main-nav { display: none; }
    .stats-block-inner { gap: 20px; flex-wrap: wrap; }
    .stats-sep { display: none; }
    .stats-num { font-size: 28px; }
    .features-grid { grid-template-columns: 1fr 1fr; }
    .about-bottom { padding: 40px 0; }
    #notices.section, #hot-sites.section, #documents.section, #sources.section { padding: 50px 0; }
    .resources-hero { padding: 100px 0 50px; min-height: auto; }
    .resources-hero .hero-title { font-size: 34px; letter-spacing: 4px; }
    .site-grid, .doc-grid { grid-template-columns: 1fr; }
    .notice-item { flex-wrap: wrap; }
    .notice-right { width: 100%; flex-direction: row; justify-content: space-between; padding-left: 50px; }
    .contact-grid { grid-template-columns: 1fr; gap: 14px; }
    .contact-card { padding: 22px 18px; }
    .qr-wrapper { width: 160px; height: 160px; padding: 10px; }
    .qr-wrapper img, .qr-wrapper canvas { width: 140px; height: 140px; }
    .contact-link-btn { width: 160px; }
}

@media (max-width: 480px) {
    .hero-banner { padding: 80px 0 40px; }
    .hero-brand { flex-direction: column; gap: 10px; }
    .hero-brand-text { text-align: center; }
    .hero-brand-name { font-size: 24px; }
    .features-grid { grid-template-columns: 1fr; }
    .hero-banner-actions .btn-main,
    .hero-banner-actions .btn-outline-main { width: 100%; justify-content: center; }
    .notice-popup-foot .btn-sm { width: auto; }
    .notice-popup-box { max-width: 100%; max-height: 80vh; }
    .contact-tips-box { max-width: 100%; }
}
/* ==================== 弹窗按钮修复 ==================== */
.notice-popup-foot .btn-sm {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 18px;
    background: var(--primary);
    color: #fff;
    font-size: 12px;
    font-weight: 500;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    transition: all .25s;
    border: none;
    letter-spacing: 1px;
    width: auto;
    min-width: auto;
}
.notice-popup-foot .btn-sm:hover {
    background: var(--primary-2);
    box-shadow: 0 0 16px rgba(59, 130, 246, 0.4);
}

/* 移动端不拉伸 */
@media (max-width: 480px) {
    .notice-popup-foot .btn-sm {
        width: auto;
        min-width: auto;
        padding: 8px 16px;
        font-size: 12px;
    }
}
/* ==================== 员工展示 ==================== */
.staff-hero {
    position: relative;
    padding: 140px 0 80px;
    overflow: hidden;
    border-bottom: 1px solid var(--border);
    background: var(--bg);
}

.staff-section {
    padding: 60px 0;
}

/* 分组筛选 */
.staff-filter {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 40px;
    position: relative;
    z-index: 1;
}
.staff-filter-btn {
    padding: 8px 20px;
    font-size: 13px;
    color: var(--text-2);
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 20px;
    text-decoration: none;
    letter-spacing: 1px;
    transition: all .25s;
}
.staff-filter-btn:hover {
    border-color: var(--primary);
    color: var(--primary-2);
}
.staff-filter-btn.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    box-shadow: 0 0 16px rgba(59, 130, 246, 0.3);
}

/* 员工网格 */
.staff-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
    position: relative;
    z-index: 1;
}

/* 员工卡片 */
.staff-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 24px;
    text-align: center;
    cursor: pointer;
    transition: all .3s;
}
.staff-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.15);
}
.staff-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--bg-2);
    border: 2px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    overflow: hidden;
    transition: all .3s;
}
.staff-card:hover .staff-avatar {
    border-color: var(--primary);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}
.staff-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.staff-avatar-text {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-2);
}
.staff-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 4px;
}
.staff-position {
    font-size: 12px;
    color: var(--text-3);
    margin-bottom: 10px;
}
.staff-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
}
.staff-tag {
    font-size: 10px;
    color: var(--primary-2);
    background: rgba(59, 130, 246, 0.08);
    padding: 2px 8px;
    border-radius: 10px;
}

/* 员工详情弹窗 */
.staff-popup-overlay {
    position: fixed;
    inset: 0;
    z-index: 3000;
    background: rgba(10, 14, 23, 0.85);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.staff-popup-box {
    background: var(--card);
    border: 1px solid var(--border-light);
    border-radius: 10px;
    max-width: 420px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5);
    transform: scale(0.92);
    opacity: 0;
    transition: all .25s;
}
.staff-popup-box.show {
    transform: scale(1);
    opacity: 1;
}
.staff-popup-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
}
.staff-popup-symbol { color: var(--primary); }
.staff-popup-x {
    background: none;
    border: none;
    color: var(--text-3);
    cursor: pointer;
    font-size: 16px;
    padding: 4px 8px;
}
.staff-popup-x:hover { color: var(--text); }
.staff-popup-body {
    padding: 24px;
    text-align: center;
}
.staff-popup-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: var(--bg-2);
    border: 2px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    overflow: hidden;
}
.staff-popup-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.staff-popup-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 4px;
}
.staff-popup-position {
    font-size: 13px;
    color: var(--text-3);
    margin-bottom: 10px;
}
.staff-popup-bio {
    font-size: 13px;
    color: var(--text-2);
    line-height: 1.8;
    margin-bottom: 14px;
}
.staff-popup-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
    margin-bottom: 16px;
}
.staff-popup-contact {
    border-top: 1px solid var(--border);
    padding-top: 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.contact-row {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-2);
}
.contact-row span:first-child {
    color: var(--text-3);
}
.contact-row a {
    color: var(--primary-2);
}

/* 响应式 */
@media (max-width: 768px) {
    .staff-hero { padding: 100px 0 50px; }
    .staff-grid { grid-template-columns: 1fr 1fr; }
    .staff-popup-box { max-width: 90%; }
}
@media (max-width: 480px) {
    .staff-grid { grid-template-columns: 1fr; }
}