/* ==========================================================================
   兰潇个人网站 — 高大上未来科技版样式 (Cyber Version)
   钛金夜空黑 × 全息电光蓝 × 3D 地球仪 × 暗黑毛玻璃卡片
   完全物理解耦，100% 独立设计与呈现
   ========================================================================== */

/* --- 1. 设计变量 --- */
:root {
    --bg: #060913;              /* 深邃钛金黑 */
    --card-bg: rgba(13, 20, 38, 0.65);
    --card-border: rgba(0, 229, 255, 0.15);
    --accent-blue: #00E5FF;      /* 全息电光蓝 */
    --accent-green: #39FF14;     /* 荧光绿 */
    --text-main: #FFFFFF;        /* 极光纯白 */
    --text-sub: #94A3B8;         /* 科技亚光灰 */
    --text-muted: #475569;       /* 幽暗灰 */

    --gradient-glow: linear-gradient(135deg, var(--accent-blue) 0%, #0077FF 50%, var(--accent-green) 100%);
    --font-cyber: 'Outfit', 'Inter', 'Noto Sans SC', -apple-system, sans-serif;
    --font-code: 'JetBrains Mono', 'Fira Code', monospace;

    /* 8px 间距步长 */
    --sp-1: 8px; --sp-2: 16px; --sp-3: 24px; --sp-4: 32px;
    --sp-6: 48px; --sp-8: 64px; --sp-12: 96px;

    --radius-card: 16px;
    --radius-btn: 8px;
    --ease-cyber: cubic-bezier(0.16, 1, 0.3, 1);
    --transition: all 0.4s var(--ease-cyber);
}

/* --- 2. 基础重置 --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
    background-color: var(--bg);
    color: var(--text-main);
    font-family: var(--font-cyber);
    font-size: 1rem;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }

/* --- 3. 动效星空与全局光罩背景 --- */
.starfield-canvas {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    z-index: -2; pointer-events: none;
}
.cursor-glow {
    position: fixed; top: -150px; left: -150px; width: 300px; height: 300px;
    border-radius: 50%; pointer-events: none; z-index: -1;
    background: radial-gradient(circle, rgba(0, 229, 255, 0.08) 0%, transparent 70%);
    opacity: 0; transition: opacity 0.3s ease;
}
.glow-bg-container {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    z-index: -1; pointer-events: none; overflow: hidden;
}
.glow-blob {
    position: absolute; width: 500px; height: 500px; border-radius: 50%;
    filter: blur(120px); opacity: 0.15; mix-blend-mode: screen;
}
.blob-1 { top: -10%; right: -5%; background: var(--accent-blue); }
.blob-2 { bottom: -10%; left: -5%; background: var(--accent-green); }

/* --- 4. 容器与通用排版 --- */
.container {
    width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 var(--sp-3);
}
section { padding: var(--sp-8) 0; }

.section-header { text-align: center; margin-bottom: var(--sp-6); }
.section-title {
    font-size: 2.4rem; font-weight: 800; letter-spacing: -0.03em; margin-bottom: var(--sp-2);
}
.section-subtitle {
    font-size: 1.05rem; color: var(--text-sub); max-width: 600px; margin: 0 auto;
}

/* --- 5. 顶部导航栏 --- */
.navbar {
    position: fixed; top: 0; left: 0; width: 100%; height: 72px;
    background-color: rgba(6, 9, 19, 0.75);
    backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--card-border); z-index: 100;
}
.nav-container {
    height: 100%; display: flex; justify-content: space-between; align-items: center;
}
.nav-logo {
    font-size: 1.35rem;
    font-weight: 900;
    letter-spacing: 0.05em;
    color: var(--text-main);
    font-family: var(--font-cyber);
}
.logo-dot {
    color: var(--accent-blue);
    font-weight: 900;
    text-shadow: 0 0 10px rgba(0, 229, 255, 0.8);
    animation: logoPulse 3s infinite ease-in-out;
}
@keyframes logoPulse {
    0%, 100% { opacity: 0.7; text-shadow: 0 0 6px rgba(0, 229, 255, 0.4); }
    50% { opacity: 1; text-shadow: 0 0 16px rgba(0, 229, 255, 1); }
}

.nav-links { display: flex; align-items: center; gap: var(--sp-4); }
.nav-links a { font-size: 0.95rem; font-weight: 500; color: var(--text-sub); }
.nav-links a:hover { color: var(--accent-blue); }

.nav-cta {
    padding: 6px 14px; border: 1px solid var(--accent-blue);
    border-radius: var(--radius-btn); color: var(--accent-blue) !important;
    background-color: rgba(0, 229, 255, 0.05); font-weight: 600;
}
.nav-cta:hover {
    background-color: var(--accent-blue); color: var(--bg) !important;
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.4);
}

.theme-btn {
    display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px;
    font-family: var(--font-code); font-size: 0.8rem; font-weight: 600;
    color: var(--accent-blue); background: rgba(0, 229, 255, 0.05);
    border: 1px solid var(--card-border); border-radius: 99px; cursor: pointer;
}
.theme-btn:hover {
    border-color: var(--accent-blue); background: rgba(0, 229, 255, 0.15);
    transform: translateY(-1px);
}

/* --- 6. HERO 双列科技排版 (文字 65%, 地球 35%) --- */
.hero-section { padding-top: 130px; padding-bottom: var(--sp-8); position: relative; }
.hero-container {
    display: flex; align-items: center; justify-content: space-between; gap: var(--sp-6);
}
.hero-text { flex: 0 0 65%; max-width: 65%; text-align: left; }
.hero-visual {
    flex: 0 0 35%; max-width: 35%; display: flex; justify-content: center; align-items: center;
}
.hero-globe-canvas {
    width: 360px; height: 360px; max-width: 100%; cursor: grab;
}
.hero-globe-canvas:active { cursor: grabbing; }

.hero-badge {
    display: inline-block; padding: 4px 12px;
    background-color: rgba(0, 229, 255, 0.06);
    border: 1px solid rgba(0, 229, 255, 0.2); border-radius: 99px;
    font-size: 0.85rem; font-weight: 600; color: var(--accent-blue);
    margin-bottom: var(--sp-3); letter-spacing: 0.05em;
}
.hero-title {
    font-size: 3.4rem; font-weight: 900; line-height: 1.15;
    letter-spacing: -0.04em; margin-bottom: var(--sp-3);
}
.gradient-text {
    background: var(--gradient-glow);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-desc {
    font-size: 1.15rem; color: var(--text-sub); margin-bottom: var(--sp-4); max-width: 680px;
}
.hero-actions { display: flex; gap: var(--sp-3); }

.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: var(--sp-2) var(--sp-4); font-size: 0.95rem; font-weight: 600;
    border-radius: var(--radius-btn); transition: var(--transition);
}
.btn-primary {
    background: var(--gradient-glow); color: var(--bg); border: none;
}
.btn-primary:hover {
    transform: translateY(-2px); box-shadow: 0 0 20px rgba(0, 229, 255, 0.4);
}
.btn-secondary {
    background-color: rgba(255, 255, 255, 0.03); color: var(--text-main);
    border: 1px solid var(--card-border);
}
.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.08); border-color: var(--text-sub);
    transform: translateY(-2px);
}

/* --- 7. SPOTLIGHT 毛玻璃卡片 --- */
.spotlight-card {
    background-color: var(--card-bg); border: 1px solid var(--card-border);
    border-radius: var(--radius-card); backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px); position: relative; overflow: hidden;
    transition: var(--transition);
}
.spotlight-card::before {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: radial-gradient(400px circle at var(--mouse-x, 0px) var(--mouse-y, 0px), rgba(0, 229, 255, 0.08), transparent 80%);
    pointer-events: none; opacity: 0; transition: opacity 0.5s ease;
}
.spotlight-card:hover::before { opacity: 1; }
.spotlight-card:hover {
    border-color: rgba(0, 229, 255, 0.35); transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

/* 梯级浮现交错动效 */
.stagger-card {
    opacity: 0;
    transform: translateY(36px) scale(0.96);
    transition: opacity 0.65s var(--ease-cyber), transform 0.65s var(--ease-cyber), border-color 0.4s ease, box-shadow 0.4s ease;
    transition-delay: calc(var(--delay, 1) * 140ms);
}
.stagger-card.in {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* --- 8. METRICS 数据大字报 --- */
.metrics-section { background-color: rgba(6, 9, 19, 0.5); }
.metrics-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--sp-3);
}
.metric-card { padding: var(--sp-4); display: flex; flex-direction: column; }
.metric-icon { font-size: 1.6rem; margin-bottom: var(--sp-2); }
.metric-number-wrapper { font-weight: 800; margin-bottom: var(--sp-1); }
.metric-number {
    font-size: 3rem; letter-spacing: -0.04em;
    background: linear-gradient(180deg, #FFFFFF 30%, var(--text-sub) 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.metric-unit { font-size: 1.4rem; color: var(--accent-blue); margin-left: 2px; }
.metric-label { font-size: 1.05rem; font-weight: 700; margin-bottom: var(--sp-1); }
.metric-desc { font-size: 0.88rem; color: var(--text-sub); }

/* --- 9. PILLARS 核心战术矩阵 (2x2 网格) --- */
.pillars-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--sp-4);
}
.pillar-card {
    padding: var(--sp-4);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.pillar-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--sp-2);
}
.pillar-icon { font-size: 2rem; }
.pillar-tag {
    padding: 2px 10px;
    background: rgba(0, 229, 255, 0.08);
    border: 1px solid rgba(0, 229, 255, 0.25);
    border-radius: 99px;
    font-family: var(--font-code);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-blue);
}
.pillar-title {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: var(--sp-2);
    color: var(--text-main);
}
.pillar-desc {
    font-size: 0.95rem;
    color: var(--text-sub);
    line-height: 1.6;
    margin-bottom: var(--sp-3);
    flex-grow: 1;
}
.pillar-metrics {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-1);
    margin-top: auto;
}
.pillar-chip {
    padding: 4px 12px;
    background: rgba(0, 229, 255, 0.04);
    border: 1px solid rgba(0, 229, 255, 0.15);
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-green);
    transition: var(--transition);
}
.pillar-card:hover .pillar-chip {
    border-color: rgba(57, 255, 20, 0.3);
    background: rgba(57, 255, 20, 0.06);
}
}

/* --- 10. HEATMAP 热力图矩阵 --- */
.heatmap-container { padding: var(--sp-4); overflow-x: auto; }
.heatmap-grid {
    display: grid; grid-template-columns: 90px repeat(3, 1fr);
    grid-template-rows: auto repeat(2, 1fr) auto; gap: var(--sp-2); min-width: 720px; position: relative;
}
.grid-header-corner {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-blue);
    background: rgba(0, 229, 255, 0.05);
    border: 1px dashed rgba(0, 229, 255, 0.2);
    border-radius: 6px;
    padding: 4px;
}
.heatmap-axis-x-label {
    grid-column: 2 / span 3; text-align: center; font-size: 0.8rem; font-weight: 700;
    color: var(--text-muted); letter-spacing: 0.1em; padding-top: var(--sp-2);
}
.grid-header-col { text-align: center; font-size: 0.85rem; font-weight: 700; color: var(--text-sub); padding-bottom: var(--sp-1); }
.grid-header-row { display: flex; align-items: center; justify-content: flex-end; padding-right: var(--sp-2); font-size: 0.85rem; font-weight: 700; color: var(--text-sub); }

.grid-cell {
    position: relative; border-radius: 6px; padding: var(--sp-3); min-height: 130px;
    display: flex; align-items: center; border: 1px solid rgba(255, 255, 255, 0.03); overflow: hidden;
}
.cell-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 1; transition: var(--transition); }
.cell-content { position: relative; z-index: 2; }
.cell-title { font-size: 0.95rem; font-weight: 800; margin-bottom: 4px; color: var(--text-main); }
.grid-cell p { font-size: 0.8rem; color: var(--text-sub); line-height: 1.4; }

.rank-high-high .cell-bg { background: rgba(0, 229, 255, 0.18); }
.rank-high-high { border-color: rgba(0, 229, 255, 0.35); }
.rank-high-high .cell-title { color: var(--accent-blue); }
.rank-high-med .cell-bg { background: rgba(0, 119, 255, 0.15); }
.rank-high-low .cell-bg { background: rgba(0, 229, 255, 0.08); }
.rank-med-high .cell-bg { background: rgba(57, 255, 20, 0.12); }
.rank-med-high .cell-title { color: var(--accent-green); }
.rank-med-med .cell-bg { background: rgba(255, 255, 255, 0.03); }
.rank-med-low .cell-bg { background: rgba(255, 255, 255, 0.01); }

/* --- 11. SUBSCRIBE & FOOTER --- */
.subscribe-card {
    padding: var(--sp-6); display: flex; flex-wrap: wrap; gap: var(--sp-4);
    align-items: center; justify-content: space-between;
}
.subscribe-info { flex: 1 1 480px; }
.badge-cta {
    display: inline-block; padding: 2px 10px; background: rgba(57, 255, 20, 0.08);
    border: 1px solid rgba(57, 255, 20, 0.2); border-radius: 4px;
    font-size: 0.8rem; font-weight: 700; color: var(--accent-green); margin-bottom: var(--sp-2);
}
.sub-title { font-size: 2.1rem; font-weight: 800; margin-bottom: var(--sp-2); }
.sub-desc { font-size: 1rem; color: var(--text-sub); margin-bottom: var(--sp-3); }

.qrcode-border {
    padding: 6px; background: var(--gradient-glow); border-radius: 12px; display: inline-block;
}
.qrcode-box { background: #060913; padding: var(--sp-2); border-radius: 6px; }
.qrcode-placeholder { width: 150px; height: 150px; color: var(--accent-blue); }
.qrcode-caption { font-size: 0.85rem; color: var(--text-sub); margin-top: var(--sp-2); text-align: center; }

.footer { border-top: 1px solid var(--card-border); padding: var(--sp-4) 0; font-size: 0.85rem; color: var(--text-muted); }
.footer-content { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--sp-2); }
.footer-links { display: flex; gap: var(--sp-3); }
.footer-links a:hover { color: var(--accent-blue); }

/* --- 12. 响应式规则 --- */
@media (max-width: 900px) {
    .hero-container { flex-direction: column; text-align: center; }
    .hero-text { flex: 1 1 100%; max-width: 100%; text-align: center; }
    .hero-actions { justify-content: center; }
    .hero-visual { flex: 1 1 100%; max-width: 100%; }
    .hero-globe-canvas { width: 280px; height: 280px; }
    .hero-title { font-size: 2.5rem; }
}