/* 龙道 DRAGONFLOW 极简先锋美学 V5.0 */
@import url('https://fonts.googleapis.com/css2?family=Syncopate:wght@400;700&family=Inter:wght@100;400;900&display=swap');

:root {
    --bg-pure: #000000;
    --bg-surface: #050505;
    --neon-red: #ff0000;
    --dim-red: #4a0000;
    --text-main: #ffffff;
    --text-dim: #444444;
    --border-thin: #111111;
}

body {
    background-color: var(--bg-pure);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    letter-spacing: -0.02em;
}

/* 极致黑红背景 */
.dragon-pulse-bg {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: radial-gradient(circle at 50% 50%, #0a0000 0%, #000 70%);
    z-index: 0;
}

/* 导航栏：极简细线 */
nav {
    border-bottom: 1px solid var(--border-thin);
}

/* 核心标题：震慑力 */
h1 {
    font-family: 'Syncopate', sans-serif;
    font-weight: 700;
    text-transform: uppercase;
    line-height: 0.9;
}

/* 赛博红色按钮 */
.industrial-btn {
    background: var(--neon-red);
    color: white;
    padding: 18px 60px;
    font-size: 11px;
    font-weight: 900;
    letter-spacing: 0.5em;
    text-transform: uppercase;
    border: none;
    clip-path: polygon(10% 0, 100% 0, 90% 100%, 0 100%);
    transition: all 0.3s;
    cursor: pointer;
}
.industrial-btn:hover {
    background: white;
    color: black;
    transform: scale(1.05);
    box-shadow: 0 0 30px var(--neon-red);
}

@keyframes progress {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(0); }
}

.animate-progress {
    animation: progress 2s ease-out forwards;
}

/* 极简看板：无背景，纯线条 */
.stat-box {
    background: transparent;
    border: none;
    border-left: 1px solid var(--border-thin);
    padding: 20px 40px;
    text-align: left;
    transition: all 0.5s;
}
.stat-box:hover {
    border-left-color: var(--neon-red);
    background: linear-gradient(90deg, rgba(255,0,0,0.05) 0%, transparent 100%);
}
.stat-box p { color: var(--text-dim); font-size: 9px; letter-spacing: 0.3em; margin-bottom: 8px; }
.stat-box span { font-size: 32px; font-weight: 100; font-family: 'Inter', sans-serif; }

/* 引擎卡片：黑金刚质感 */
.engine-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-thin);
    padding: 60px;
    position: relative;
    overflow: hidden;
}
.engine-card::after {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 2px; height: 0;
    background: var(--neon-red);
    transition: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.engine-card:hover::after { height: 100%; }

/* NFT 格子：极简网格 */
.nft-slot {
    background: transparent;
    border: 1px solid var(--border-thin);
    aspect-ratio: 1;
    border-radius: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.nft-slot:hover {
    background: var(--neon-red);
    border-color: var(--neon-red);
}
.nft-slot:hover span { color: white !important; }

/* 进度条：极细红线 */
.progress-bg { height: 1px; background: #111; }
.progress-fill { background: var(--neon-red); box-shadow: 0 0 10px var(--neon-red); }

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 4px;
}

::-webkit-scrollbar-track {
    background: #000000;
}

::-webkit-scrollbar-thumb {
    background: #222;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #ff0000;
}

/* 隐藏部分浏览器默认的上下箭头 */
::-webkit-scrollbar-button {
    display: none;
}