* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", sans-serif;
    /* 自定义图片光标 */
    cursor: url('../img/cursor.png'), auto;
}

:root {
    --main-blue: #00b8ff;
    --dark-bg: #080c18;
    --card-bg: rgba(15,22,40,0.75);
    --glow: 0 0 12px #00b8ff70;
}

/* 背景轮播容器 */
.bg-slider {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1; /* 层级低于所有内容 */
    overflow: hidden;
}

/* 轮播图片容器 */
.bg-slider .slides {
    width: 500%; /* 5张图占500%宽度 */
    height: 100%;
    display: flex;
    animation: slide 20s linear infinite; /* 20秒轮播一次，匀速循环 */
}

/* 单张背景图样式 */
.bg-slider .slide {
    width: 20%; /* 每张图占20%宽度 */
    height: 100%;
    position: relative;
}

.bg-slider .slide img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* 覆盖全屏且保持比例 */
    /* 美化特效：模糊+降低亮度，保证文字可读性 */
    filter: blur(4px) brightness(0.3);
    transition: filter 0.5s ease;
}

/* 轮播动画 */
@keyframes slide {
    0% { transform: translateX(0); }
    20% { transform: translateX(0); } /* 每张图停留4秒（20%*20s） */
    25% { transform: translateX(-20%); } /* 切换耗时1秒 */
    45% { transform: translateX(-20%); }
    50% { transform: translateX(-40%); }
    70% { transform: translateX(-40%); }
    75% { transform: translateX(-60%); }
    95% { transform: translateX(-60%); }
    100% { transform: translateX(-80%); }
}

/* 优化内容层级，确保不被背景遮挡 */
header, .container, .page-banner, footer, .login-mask {
    position: relative;
    z-index: 10;
}

/* 修复body背景色，与轮播图融合 */
body {
    background-color: var(--dark-bg);
    color: #fff;
    /* 移除原有径向渐变，避免与轮播图冲突 */
}
header {
    backdrop-filter: blur(10px);
    background: rgba(8,12,24,0.7);
    border-bottom: 1px solid #00b8ff33;
    position: fixed;
    width:100%;
    top:0;
    z-index:999;
}
.nav-wrap {
    max-width:1300px;
    margin:0 auto;
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:16px 20px;
}
.logo-text {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size:26px;
    font-weight:bold;
    color:var(--main-blue);
    letter-spacing:2px;
    cursor: pointer;
}
.logo-icon {
    width: 60px;
    height: 60px;
    object-fit: contain;
}
.nav-menu a {
    color:#ddd;
    text-decoration:none;
    margin:0 14px;
    transition:0.3s;
}
.nav-menu a:hover {
    color:var(--main-blue);
    text-shadow:var(--glow);
}
.nav-menu a.active {
    color: var(--main-blue);
    font-weight: bold;
}
.login-btn {
    padding:8px 18px;
    border:1px solid var(--main-blue);
    border-radius:6px;
    color:var(--main-blue);
    background:transparent;
    cursor:pointer;
    transition:0.3s;
}
.login-btn:hover {
    background:var(--main-blue);
    color:#000;
    box-shadow:var(--glow);
}
.login-mask {
    display:none;
    position:fixed;
    top:0;left:0;
    width:100%;height:100%;
    background:rgba(0,0,0,0.75);
    z-index:1000;
    align-items:center;
    justify-content:center;
}
.login-box {
    width:360px;
    padding:30px;
    background:var(--card-bg);
    border:1px solid #00b8ff44;
    border-radius:12px;
    box-shadow:var(--glow);
}
.login-box h3 {
    text-align:center;
    color:var(--main-blue);
    margin-bottom:22px;
}
.inp-item {
    margin-bottom:16px;
}
.inp-item input {
    width:100%;
    padding:11px;
    background:#0f172b;
    border:1px solid #00b8ff40;
    border-radius:5px;
    color:#fff;
    outline:none;
}
.sub-btn {
    width:100%;
    padding:11px;
    background:var(--main-blue);
    border:none;
    border-radius:5px;
    font-weight:bold;
    cursor:pointer;
}
.close-login {
    text-align:right;
    color:#aaa;
    cursor:pointer;
    margin-bottom:8px;
}
.login-desc {
    margin-top:12px;font-size:13px;color:#aaa;
}
.banner {
    margin-top:72px;
    min-height:88vh;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    padding:20px;
    text-align:center;
    border-bottom:1px solid #00b8ff22;
    position: relative;
}

.glow-title {
    font-size: 52px;
    margin-bottom: 14px;
    background: linear-gradient(90deg, #00b8ff, #fff, #00b8ff);
    background-size: 200% 100%;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: glow 3s linear infinite;
}
@keyframes glow {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.banner p.slogan {
    font-size:22px;
    color:#b9e5ff;
    margin-bottom:30px;
}
.container {
    max-width:1250px;
    margin:0 auto;
    padding:60px 20px;
}
.sect-title {
    text-align:center;
    font-size:32px;
    color:var(--main-blue);
    margin-bottom:45px;
}
.card-row {
    display:flex;
    flex-wrap:wrap;
    gap:26px;
    justify-content:center;
}
.info-card {
    background:var(--card-bg);
    border:1px solid #00b8ff35;
    border-radius:10px;
    padding:24px;
    transition:0.3s;
}
.info-card:hover {
    box-shadow:var(--glow);
    transform:translateY(-6px);
}
.info-card h4 {
    color:var(--main-blue);
    margin-bottom:12px;
    font-size:19px;
}
.recruit-box {
    background:var(--card-bg);
    border:1px solid #00b8ff33;
    border-radius:10px;
    padding:30px;
}
table {
    width:100%;
    border-collapse: collapse;
}
td,th {
    border:1px solid #00b8ff30;
    padding:12px;
    text-align: center;
}
th {
    color:var(--main-blue);
}
.about-content {
    line-height:1.8;
    font-size:16px;
    max-width: 900px;
    margin: 0 auto;
}
.contact-info {
    text-align:center;
    font-size:18px;
    line-height:2;
}
footer {
    border-top:1px solid #00b8ff22;
    padding:35px;
    text-align:center;
    color:#999;
}

.page-banner {
    padding: 120px 0 40px;
    text-align: center;
}

/* ====================== 战队成员 科技感样式 ====================== */
.core-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr); /* 三列 */
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 队长卡片 占满整行三列 */
.member-card.captain-full {
  grid-column: 1 / -1;   /* 强制占满所有列 */
  width: 100%;          /* 宽度100% */
  max-width: 100%;       /* 取消宽度限制，完全占满 */
  margin: 0 auto;
}

/* 核心成员卡片 —— 科技深色+霓虹蓝边框 */
.member-card {
  background: linear-gradient(145deg, #121a29, #1c2a4a);
  border-radius: 14px;
  padding: 24px;
  text-align: center;
  border: 2px solid rgba(0, 184, 255, 0.3);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3), 0 0 12px rgba(0, 184, 255, 0.15);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  color: #e0e6ff;
}
.member-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 184, 255, 0.08), transparent);
  transition: left 0.5s;
}
.member-card:hover::before {
  left: 100%;
}
.member-card:hover {
  transform: translateY(-6px);
  border-color: #00b8ff;
  box-shadow: 0 10px 30px rgba(0, 184, 255, 0.25);
}

/* 成员头像 */
.member-card img {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 14px;
  border: 3px solid #00b8ff;
  box-shadow: 0 0 12px rgba(0, 184, 255, 0.4);
}

/* 文字颜色 */
.member-card h3 {
  font-size: 19px;
  margin: 0 0 8px;
  color: #ffffff;
  text-shadow: 0 0 6px rgba(0, 184, 255, 0.3);
}
.member-card .post {
  color: #00d1ff;
  font-weight: bold;
  margin-bottom: 10px;
  font-size: 15px;
  text-shadow: 0 0 6px rgba(0, 209, 255, 0.4);
}
.member-card p {
  font-size: 14px;
  color: #b8c7e7;
  margin: 5px 0;
  line-height: 1.4;
}

/* 小组员卡片 */
.member-card.small {
  padding: 16px;
  background: linear-gradient(145deg, #152035, #1e2d4f);
}
.member-card.small img {
  width: 70px;
  height: 70px;
}
.member-card.small h3 {
  font-size: 16px;
}

/* 组别展开区域 */
.group-members-container {
  max-width: 1200px;
  margin: 40px auto 60px;
  padding: 0 20px;
}
.group-member-box {
  margin-bottom: 30px;
}
.group-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #18233a;
  padding: 16px 22px;
  border-radius: 10px;
  border: 1px solid rgba(0, 184, 255, 0.2);
}
.group-header h3 {
  margin: 0;
  color: #ffffff;
  text-shadow: 0 0 5px rgba(0, 184, 255, 0.2);
}

/* 更多按钮 */
.show-more-btn {
  background: #00b8ff;
  color: #fff;
  border: none;
  padding: 7px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-weight: bold;
  box-shadow: 0 0 10px rgba(0, 184, 255, 0.2);
  transition: 0.2s;
}
.show-more-btn:hover {
  background: #009fdf;
  box-shadow: 0 0 14px rgba(0, 184, 255, 0.4);
}

/* 成员列表布局 */
.group-member-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 16px;
}
.hidden {
  display: none !important;
}

/* 组别卡片 —— 纵向排列 + 科技风统一样式 */
.groups-vertical-container {
    max-width: 900px;
    margin: 30px auto;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    gap: 24px; /* 卡片之间统一间距 */
}

/* 所有组别卡片宽度、样式完全统一 */
.groups-vertical-container .info-card {
    width: 100% !important;
    background: linear-gradient(145deg, #121a29, #1c2a4a);
    border: 2px solid rgba(0, 184, 255, 0.3);
    border-radius: 14px;
    padding: 26px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

/* 卡片hover动效 */
.groups-vertical-container .info-card:hover {
    transform: translateY(-4px);
    border-color: #00b8ff;
    box-shadow: 0 10px 25px rgba(0, 184, 255, 0.15);
}

/* 卡片标题样式 */
.groups-vertical-container .info-card h4 {
    font-size: 20px;
    color: #ffffff;
    margin: 0 0 14px 0;
    text-shadow: 0 0 6px rgba(0, 184, 255, 0.3);
}

/* 卡片文字样式 */
.groups-vertical-container .info-card p {
    color: #c8d6f7;
    font-size: 15px;
    line-height: 1.6;
    margin: 0;
}

/* ===================== 资源中心 科技蓝样式 ===================== */
.resource-section {
    margin: 50px 0;
    padding: 30px;
    background: rgba(15,22,40,0.7);
    border: 1px solid #00b8ff33;
    border-radius: 14px;
}
.resource-section h3 {
    color: #00b8ff;
    font-size: 24px;
    margin-bottom: 24px;
    padding-bottom: 10px;
    border-bottom: 2px solid #00b8ff33;
}
.resource-categories {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}
@media (max-width:768px) {
    .resource-categories { grid-template-columns: 1fr; }
}
.resource-category-card {
    background: linear-gradient(145deg, #121a29, #1c2a4a);
    border: 2px solid #00b8ff33;
    border-radius: 12px;
    padding: 22px;
    transition: 0.3s;
}
.resource-category-card:hover {
    transform: translateY(-4px);
    border-color: #00b8ff;
    box-shadow: 0 0 12px #00b8ff33;
}
.resource-category-card h4 {
    color: #fff;
    font-size: 18px;
    margin-bottom: 16px;
}
.resource-file-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.resource-file-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    color: #c8d6f7;
    border-bottom: 1px solid #00b8ff15;
}
.resource-file-list li:last-child {
    border-bottom: none;
}
.download-btn {
    padding: 6px 12px;
    background: #00b8ff22;
    border: 1px solid #00b8ff;
    color: #00b8ff;
    border-radius: 6px;
    font-size: 12px;
    text-decoration: none;
    transition: 0.2s;
}
.download-btn:hover {
    background: #00b8ff;
    color: #000;
}

/* 上传区域 */
.upload-section {
    margin-top: 40px;
    padding: 30px;
    background: rgba(15,22,40,0.7);
    border: 1px solid #00b8ff33;
    border-radius: 14px;
    display: none;
}
.upload-section h3 {
    color: #00b8ff;
    font-size: 24px;
    margin-bottom: 24px;
    padding-bottom: 10px;
    border-bottom: 2px solid #00b8ff33;
}
.upload-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}
.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.form-group label {
    color: #c8d6f7;
    font-size: 14px;
}
.form-group input,
.form-group select {
    padding: 10px;
    background: #0f172b;
    border: 1px solid #00b8ff44;
    border-radius: 6px;
    color: #fff;
    outline: none;
}
.upload-btn {
    padding: 12px;
    background: #00b8ff;
    color: #fff;
    border: none;
    border-radius: 6px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.2s;
}
.upload-btn:hover {
    box-shadow: 0 0 10px #00b8ff66;
}

/* ===================== 资源中心 侧边栏布局 ===================== */
.resource-layout {
    display: flex;
    gap: 30px;
    margin-top: 30px;
}
.resource-sidebar {
    width: 200px;
    flex-shrink: 0;
}
.sidebar-menu {
    background: rgba(15,22,40,0.7);
    border: 1px solid #00b8ff33;
    border-radius: 12px;
    overflow: hidden;
}
.menu-item {
    padding: 14px 20px;
    color: #e0e6ff;
    cursor: pointer;
    border-bottom: 1px solid #00b8ff15;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: 0.2s;
    position: relative;
}
.menu-item:hover,
.menu-item.active {
    background: #00b8ff22;
    color: #00b8ff;
}
.menu-item .arrow {
    font-size: 12px;
    color: #8899bb;
    position: absolute;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
}
.sub-menu {
    background: #0f1624;
    display: none;
}
.sub-item {
    padding: 11px 20px;
    color: #d0dcf5;
    cursor: pointer;
    border-bottom: 1px solid #00b8ff0a;
    text-align: center;
}
.sub-item:hover,
.sub-item.active {
    color: #00b8ff;
    background: #121a29;
}

.resource-content {
    flex: 1;
}
.resource-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 20px;
    max-width: 1400px;
    margin-right: 30px;
}
.resource-card {
    background: linear-gradient(145deg, #121a29, #1c2a4a);
    border: 2px solid #00b8ff33;
    border-radius: 12px;
    padding: 22px;
    transition: 0.3s;
}
.resource-card:hover {
    transform: translateY(-3px);
    border-color: #00b8ff;
    box-shadow: 0 0 10px #00b8ff22;
}
.resource-card h4 {
    color: #00d1ff;
    margin-bottom: 14px;
    font-size: 18px;
}
.resource-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.resource-card li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    color: #c8d6f7;
    border-bottom: 1px solid #00b8ff10;
}
.resource-card li:last-child {
    border-bottom: none;
}

@media (max-width:900px) {
    .resource-layout {
        flex-direction: column;
    }
    .resource-sidebar {
        width: 100%;
    }
    .resource-grid {
        grid-template-columns: 1fr;
        max-width: 100%;
        margin-right: 0;
    }
}

/*========== 彩蛋页 橙黄科技风样式 ==========*/
:root {
    --tech-orange: #ff9500;
    --tech-orange-light: #ffbc52;
    --tech-dark-bg: #090c17;
    --tech-card-bg: rgba(22,28,45,0.72);
    --orange-glow: 0 0 14px rgba(255,149,0,0.35);
}
.easter-wrap {
    background-color: var(--tech-dark-bg);
    min-height: 100vh;
    padding-top:90px;
}
.easter-container {
    max-width:1250px;
    margin:0 auto;
    padding:0 20px 60px;
}
.easter-title {
    font-size:36px;
    text-align:center;
    color:var(--tech-orange);
    background: linear-gradient(90deg,var(--tech-orange),#fff,var(--tech-orange));
    background-size:200% 100%;
    background-clip:text;
    color:transparent;
    animation:orangeFlow 3s linear infinite;
    margin-bottom:10px;
}
.easter-desc {
    text-align:center;
    color:#b9bccc;
    font-size:17px;
    margin-bottom:55px;
}
.easter-section-title {
    font-size:26px;
    color:var(--tech-orange);
    border-left:4px solid var(--tech-orange);
    padding-left:15px;
    margin:50px 0 30px;
    text-shadow:0 0 8px rgba(255,149,0,0.25);
}
/*队员卡片网格*/
.easter-member-grid {
    display:grid;
    grid-template-columns: repeat(auto-fill,minmax(230px,1fr));
    gap:26px;
}
/*科技卡片基础+流光hover动画*/
.easter-member-card {
    background:var(--tech-card-bg);
    border:1px solid rgba(255,149,0,0.25);
    border-radius:14px;
    padding:26px;
    position:relative;
    overflow:hidden;
    transition:all 0.35s ease;
    color:#e2e8f5;
}
/*卡片流光斜向扫过动画*/
.easter-member-card::before {
    content:"";
    position:absolute;
    top:0;
    left:-100%;
    width:100%;
    height:100%;
    background:linear-gradient(90deg,transparent,rgba(255,149,0,0.12),transparent);
    transition:left 0.6s ease;
}
.easter-member-card:hover::before {
    left:100%;
}
/*hover上浮+霓虹发光*/
.easter-member-card:hover {
    transform:translateY(-8px);
    border-color:var(--tech-orange);
    box-shadow:var(--orange-glow);
}
.easter-member-card h3 {
    color:var(--tech-orange-light);
    font-size:20px;
    margin-bottom:12px;
}
.easter-member-card p {
    font-size:14.5px;
    line-height:1.65;
    color:#c2cde2;
    margin:6px 0;
}
/*作者介绍卡片*/
.easter-author-box {
    background:var(--tech-card-bg);
    border:1px solid rgba(255,149,0,0.25);
    border-radius:14px;
    padding:32px;
    transition:0.35s;
}
.easter-author-box:hover {
    border-color:var(--tech-orange);
    box-shadow:var(--orange-glow);
}
.easter-author-box h3 {
    color:var(--tech-orange);
    font-size:22px;
    margin-bottom:18px;
}
.easter-author-box p {
    color:#c2cde2;
    margin:9px 0;
    font-size:15px;
}
/*返回按钮*/
.easter-back-btn {
    display:block;
    width:210px;
    text-align:center;
    padding:13px 0;
    margin:65px auto 0;
    background:transparent;
    border:1px solid var(--tech-orange);
    color:var(--tech-orange);
    border-radius:8px;
    text-decoration:none;
    font-size:16px;
    transition:0.3s;
}
.easter-back-btn:hover {
    background:var(--tech-orange);
    color:#000;
    box-shadow:var(--orange-glow);
}
/*标题渐变流动动画*/
@keyframes orangeFlow {
    0% {background-position:200% 0;}
    100% {background-position:-200% 0;}
}