:root {
    --primary: #00e5ff;
    --primary-2: #0099ff;
    --secondary: #7b2ffd;
    --accent: #00ffc8;
    --danger: #ff4d6d;
    --bg-0: #05070f;
    --bg-1: #070b18;
    --bg-2: #0b1224;
    --text-main: #e6f1ff;
    --text-sub: #8ea3c7;
    --border: rgba(0, 229, 255, 0.18);
    --border-strong: rgba(0, 229, 255, 0.45);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Inter", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
    background: var(--bg-0);
    color: var(--text-main);
    min-height: 100vh;
    overflow-x: hidden;
}

/* 背景层 */
.cyber-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    background:
        radial-gradient(circle at 15% 20%, rgba(0, 153, 255, 0.18), transparent 45%),
        radial-gradient(circle at 85% 30%, rgba(123, 47, 253, 0.18), transparent 45%),
        radial-gradient(circle at 50% 90%, rgba(0, 229, 255, 0.12), transparent 50%),
        linear-gradient(180deg, #05070f 0%, #070b18 45%, #05070f 100%);
}

.cyber-grid {
    position: fixed;
    inset: 0;
    z-index: 0;
    background-image:
        linear-gradient(rgba(0, 229, 255, 0.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 229, 255, 0.07) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
    pointer-events: none;
}

.cyber-scan {
    position: fixed;
    left: 0;
    right: 0;
    height: 180px;
    background: linear-gradient(180deg, transparent, rgba(0, 229, 255, 0.08), transparent);
    animation: scan 7s linear infinite;
    pointer-events: none;
    z-index: 1;
}

@keyframes scan {
    0% {
        top: -200px;
    }
    100% {
        top: 100%;
    }
}

#particles span {
    position: absolute;
    border-radius: 999px;
    background: rgba(0, 229, 255, 0.35);
    box-shadow: 0 0 8px rgba(0, 229, 255, 0.5);
    animation: particleMove linear infinite;
}

@keyframes particleMove {
    0% {
        transform: translateY(110vh) scale(0.6);
        opacity: 0;
    }
    12% {
        opacity: 1;
    }
    88% {
        opacity: 1;
    }
    100% {
        transform: translateY(-140px) scale(1.1);
        opacity: 0;
    }
}

#mouseLight {
    pointer-events: none;
    position: fixed;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 229, 255, 0.12), transparent 70%);
    transform: translate(-50%, -50%);
    z-index: 2;
}

/* 主容器 */
.site-main {
    position: relative;
    z-index: 10;
    width: 100%;
    min-height: 100vh;
    padding: 40px 16px 60px;
}

.container-x {
    max-width: 1200px;
    margin: 0 auto;
}

/* 顶部导航 */
.cyber-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 22px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    backdrop-filter: blur(14px);
    margin-bottom: 24px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
    font-size: 20px;
    letter-spacing: 1px;
}

.brand-mark {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: conic-gradient(from 140deg, var(--primary), var(--secondary), var(--primary));
    box-shadow: 0 0 18px rgba(0, 229, 255, 0.45);
    position: relative;
}

.brand-mark::after {
    content: "";
    position: absolute;
    inset: 4px;
    border-radius: 7px;
    background: #070b18;
}

.brand-text {
    background: linear-gradient(90deg, var(--primary), var(--accent), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.nav-status {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(0, 229, 255, 0.08);
    border: 1px solid var(--border-strong);
    font-size: 13px;
    color: var(--primary);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 0 0 rgba(0, 229, 255, 0.7);
    animation: pulse 1.6s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(0, 229, 255, 0.7);
    }
    70% {
        box-shadow: 0 0 0 12px rgba(0, 229, 255, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(0, 229, 255, 0);
    }
}

/* 卡片 */
.cyber-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
    border: 1px solid var(--border);
    border-radius: 22px;
    padding: 24px;
    backdrop-filter: blur(18px);
    box-shadow:
        0 10px 40px rgba(0, 0, 0, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.06),
        0 0 30px rgba(0, 229, 255, 0.08);
    position: relative;
    overflow: hidden;
}

.cyber-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), transparent);
}

.cyber-card::after {
    content: "";
    position: absolute;
    bottom: 0;
    right: 0;
    width: 80px;
    height: 3px;
    background: linear-gradient(270deg, var(--secondary), transparent);
}

.cyber-card-strong {
    border-color: var(--border-strong);
    box-shadow:
        0 10px 40px rgba(0, 0, 0, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.08),
        0 0 40px rgba(0, 229, 255, 0.15);
}

/* 横幅区 */
.banner-wrap {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border-strong);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45), 0 0 35px rgba(0, 229, 255, 0.15);
}

.banner-wrap img {
    width: 100%;
    height: auto;
    display: block;
}

.banner-overlay {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 18px 22px;
    background: linear-gradient(180deg, transparent, rgba(5, 7, 15, 0.88));
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 12px;
    flex-wrap: wrap;
}

.banner-title {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    text-shadow: 0 0 12px rgba(0, 229, 255, 0.8);
}

.banner-subtitle {
    font-size: 13px;
    color: var(--text-sub);
}

/* 标题 */
.hero-title {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 900;
    line-height: 1.12;
    letter-spacing: 1px;
    margin: 10px 0 16px;
}

.text-gradient-cyber {
    background: linear-gradient(90deg, var(--primary), var(--accent), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-sub);
    margin-bottom: 24px;
}

.lead-text {
    color: var(--text-sub);
    line-height: 1.8;
    font-size: 15px;
}

/* 倒计时 */
.countdown-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    margin-top: 16px;
}

.countdown-item {
    background: rgba(0, 229, 255, 0.08);
    border: 1px solid var(--border-strong);
    border-radius: 16px;
    padding: 18px 10px;
    text-align: center;
    position: relative;
}

.countdown-num {
    font-size: clamp(26px, 3.4vw, 40px);
    font-weight: 800;
    color: var(--primary);
    text-shadow: 0 0 18px rgba(0, 229, 255, 0.6);
    font-variant-numeric: tabular-nums;
}

.countdown-label {
    font-size: 12px;
    color: var(--text-sub);
    margin-top: 4px;
    letter-spacing: 2px;
}

/* 进度模块 */
.progress-list {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.progress-item .progress-head {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 14px;
}

.progress-name {
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 10px;
}

.progress-bar {
    width: 100%;
    height: 12px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 999px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-2), var(--primary), var(--accent));
    border-radius: 999px;
    position: relative;
    transition: width 0.8s ease;
    box-shadow: 0 0 14px rgba(0, 229, 255, 0.5);
}

.progress-fill::after {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 30px;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.7));
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        opacity: 0;
        transform: translateX(-100%);
    }
    100% {
        opacity: 1;
        transform: translateX(100%);
    }
}

/* 网格模块 */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

@media (max-width: 768px) {
    .grid-2 {
        grid-template-columns: 1fr;
    }
    .countdown-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.module-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 14px;
    color: var(--text-main);
}

.module-title::before {
    content: "";
    width: 4px;
    height: 18px;
    background: linear-gradient(180deg, var(--primary), var(--secondary));
    border-radius: 4px;
}

/* 功能预告 */
.feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.feature-list li {
    padding: 12px 14px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    color: var(--text-sub);
    font-size: 14px;
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.feature-list li::before {
    content: "▸";
    color: var(--primary);
    margin-top: 2px;
}

/* 订阅表单 */
.subscribe-form {
    display: flex;
    gap: 12px;
    margin-top: 14px;
}

.subscribe-form input {
    flex: 1;
    padding: 14px 16px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border);
    color: #fff;
    outline: none;
    font-size: 15px;
}

.subscribe-form input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.18);
}

.btn-cyber {
    padding: 14px 22px;
    border-radius: 14px;
    background: linear-gradient(90deg, var(--primary-2), var(--secondary));
    color: #fff;
    font-weight: 700;
    border: none;
    cursor: pointer;
    letter-spacing: 1px;
    box-shadow: 0 10px 24px rgba(0, 153, 255, 0.35);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-cyber:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 30px rgba(0, 153, 255, 0.5);
}

/* 联系信息 */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.contact-item {
    padding: 16px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    font-size: 14px;
    color: var(--text-sub);
}

.contact-item strong {
    display: block;
    color: var(--text-main);
    margin-bottom: 6px;
    font-size: 15px;
}

/* 页脚 */
.site-footer {
    text-align: center;
    color: var(--text-sub);
    font-size: 13px;
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

/* 后台通用 */
.admin-body {
    background: #070b18;
    color: #e6f1ff;
}

.admin-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    min-height: 100vh;
}

@media (max-width: 768px) {
    .admin-layout {
        grid-template-columns: 1fr;
    }
}

.admin-sidebar {
    background: linear-gradient(180deg, rgba(0, 229, 255, 0.06), rgba(123, 47, 253, 0.06));
    border-right: 1px solid var(--border);
    padding: 24px 18px;
}

.admin-main {
    padding: 24px;
}

.admin-nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-radius: 12px;
    color: var(--text-sub);
    text-decoration: none;
    margin-bottom: 6px;
    border: 1px solid transparent;
}

.admin-nav-item.active,
.admin-nav-item:hover {
    background: rgba(0, 229, 255, 0.08);
    border-color: var(--border-strong);
    color: #fff;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 20px;
}

.stat-num {
    font-size: 30px;
    font-weight: 800;
    color: var(--primary);
}

.stat-label {
    color: var(--text-sub);
    font-size: 13px;
    margin-top: 6px;
}

.admin-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.admin-form input[type="text"],
.admin-form input[type="number"],
.admin-form input[type="email"],
.admin-form input[type="password"],
.admin-form textarea {
    width: 100%;
    padding: 12px 14px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    color: #fff;
    outline: none;
}

.admin-form input:focus,
.admin-form textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.18);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table th,
.admin-table td {
    padding: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    text-align: left;
    font-size: 14px;
}

.admin-table th {
    color: var(--primary);
    background: rgba(0, 229, 255, 0.06);
}

.admin-btn {
    padding: 10px 16px;
    border-radius: 10px;
    background: linear-gradient(90deg, var(--primary-2), var(--secondary));
    color: #fff;
    border: none;
    cursor: pointer;
}

.admin-btn-danger {
    background: linear-gradient(90deg, #ff4d6d, #ff8a3d);
}

.admin-btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border);
}

.search-row {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.search-row input {
    flex: 1;
    padding: 12px 14px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    color: #fff;
    outline: none;
}

.banner-preview {
    width: 100%;
    max-height: 220px;
    object-fit: cover;
    border-radius: 14px;
    border: 1px solid var(--border-strong);
    margin-top: 12px;
}