/* 字体引入：Inter (现代、简洁、国际化) */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600&display=swap');

:root {
    /* 高端冷色调 */
    --bg-deep: #08080a;
    --accent-color: #3b82f6; /* 国际通用的科技蓝 */
    --accent-glow: rgba(59, 130, 246, 0.3);
    --text-main: #ffffff;
    --text-muted: #9ca3af;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-deep);
    color: var(--text-main);
    min-height: 100vh;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
}

/* 背景处理 */
#tech-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.6; /* 让背景更低调 */
}

/* 顶部环境光晕 - 营造氛围 */
.ambient-light {
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 80%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
    z-index: 0;
    pointer-events: none;
}

.container {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 900px;
    padding: 20px 40px 60px;
    text-align: center;
}

/* 品牌头部 */
header {
    margin-bottom: 60px;
    animation: fadeDown 1s ease-out;
}

.brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 15px;
}

h1 {
    font-size: 3.5rem;
    font-weight: 600;
    letter-spacing: -1px; /* 紧凑一点更现代 */
    background: linear-gradient(to bottom, #fff 0%, #a5b4fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.badge {
    font-size: 0.7rem;
    letter-spacing: 1px;
    padding: 4px 8px;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 4px;
    color: #a5b4fc;
    background: rgba(255,255,255,0.05);
}

.slogan {
    color: var(--text-muted);
    font-size: 0.8rem;
    letter-spacing: 4px;
    text-transform: uppercase;
    opacity: 0.8;
}

/* 磨砂玻璃面板 */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(20px); /* 强模糊 */
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 24px; /* 大圆角更优雅 */
    padding: 60px 80px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
    animation: fadeUp 1s ease-out 0.2s backwards;
}

/* 顶部流光线条 */
.data-stream {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
    opacity: 0.5;
    animation: stream 3s ease-in-out infinite;
}

.hero-text h2 {
    font-size: 2.2rem;
    font-weight: 400;
    margin-bottom: 18px;
    color: #fff;
}

.hero-text p {
    color: var(--text-muted);
    line-height: 1.8;
    font-size: 1rem;
    max-width: 580px;
    margin: 0 auto;
}

.panel-content {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
}

/* 极简状态行 */
.status-row {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    padding-top: 18px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 5px;
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.stat-item .value {
    color: #fff;
    font-weight: 600;
    font-size: 0.9rem;
}

.dot {
    width: 6px;
    height: 6px;
    background-color: #10b981; /* 极简绿 */
    border-radius: 50%;
    box-shadow: 0 0 10px #10b981;
}

/* 按钮组 */
.cta-group {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.btn {
    position: relative;
    padding: 16px 48px;
    border-radius: 12px; /* 圆润矩形 */
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.primary-btn {
    background: #fff;
    color: #000;
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px -5px rgba(255, 255, 255, 0.3);
}

.secondary-btn {
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.secondary-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
}

/* 规格面板 */
.status-card,
.spec-card {
    background: rgba(255, 255, 255, 0.04);
    border-radius: 18px;
    padding: 32px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.02);
    text-align: left;
}

.section-title {
    font-size: 0.75rem;
    letter-spacing: 4px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.spec-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.spec-list li {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.spec-list li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.spec-list .label {
    font-size: 0.7rem;
    letter-spacing: 3px;
    color: var(--text-muted);
}

.spec-list .value {
    font-size: 1rem;
    color: #fff;
}

.status-metrics {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    margin-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.05);
    padding-top: 16px;
    flex-wrap: wrap;
}

.metric {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 120px;
}

.metric .label {
    font-size: 0.7rem;
    letter-spacing: 2px;
    color: var(--text-muted);
}

.metric .value {
    font-size: 1rem;
    color: #fff;
}

/* 按钮扫光动画 */
.shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.8), transparent);
    transform: skewX(-20deg);
    animation: shine 6s infinite;
}

footer {
    margin-top: 40px;
    font-size: 0.7rem;
    color: rgba(255,255,255,0.2);
    letter-spacing: 1px;
}

/* 动画关键帧 */
@keyframes fadeDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes stream {
    0% { background-position: -200% 0; opacity: 0; }
    50% { opacity: 0.5; }
    100% { background-position: 200% 0; opacity: 0; }
}

@keyframes shine {
    0% { left: -100%; opacity: 0; }
    10% { opacity: 0.5; }
    20% { left: 200%; opacity: 0; }
    100% { left: 200%; opacity: 0; }
}

/* 移动端适配 */
@media (max-width: 1024px) {
    body {
        justify-content: flex-start;
        padding-top: 40px;
    }
    .glass-panel {
        padding: 48px 50px;
    }
    .info-grid {
        gap: 20px;
    }
}

@media (max-width: 768px) {
    body {
        padding-top: 30px;
    }
    .container {
        padding: 0 20px 40px;
    }
    header {
        margin-bottom: 30px;
    }
    h1 {
        font-size: 2.4rem;
    }
    .glass-panel {
        padding: 36px 24px;
        border-radius: 20px;
    }
    .hero-text h2 {
        font-size: 1.8rem;
    }
    .hero-text p {
        font-size: 0.95rem;
    }
    .info-grid {
        grid-template-columns: 1fr;
    }
    .status-card,
    .spec-card {
        padding: 24px;
    }
    .status-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    .status-metrics {
        flex-direction: column;
        gap: 12px;
    }
    .cta-group {
        flex-direction: column;
        width: 100%;
    }
    .btn {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px 32px;
    }
    h1 {
        font-size: 2rem;
    }
    .glass-panel {
        padding: 28px 18px;
    }
    .hero-text h2 {
        font-size: 1.6rem;
    }
    .hero-text p {
        line-height: 1.6;
    }
    .status-card,
    .spec-card {
        padding: 20px;
    }
    .spec-list li {
        padding-bottom: 10px;
    }
}