/* ==========================================================================
           01. 全局 CSS 变量系统 (Global Variables System)
           ========================================================================== */
        :root {
            /* 字体排印 */
            --f-sans: 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --f-serif: 'Noto Serif SC', Georgia, serif;
            --f-mono: 'JetBrains Mono', monospace;

            /* 核心调色板 (Dark Theme) */
            --c-bg-main: #09090b;       /* 极暗背景 */
            --c-bg-surface: #121214;    /* 模块表面层 */
            --c-bg-elevated: #18181b;   /* 模块悬浮层 */
            --c-bg-glass: rgba(18, 18, 20, 0.75);
            
            /* 品牌主题色 */
            --c-gold: #d4af37;          /* 经典暗金 */
            --c-gold-bright: #ffdf73;   /* 亮闪金 */
            --c-gold-dim: rgba(212, 175, 55, 0.2);
            --c-red-accent: #FF3366;    /* 极客红 */
            --c-red-glow: rgba(255, 51, 102, 0.4);
            --c-cyan: #00e5ff;          /* 赛博青 */
            
            /* 文本颜色 */
            --c-text-primary: #f4f4f5;  /* 亮灰主文本 */
            --c-text-secondary: #a1a1aa;/* 中灰次文本 */
            --c-text-muted: #52525b;    /* 暗灰文本 */
            
            /* 边框与辅助 */
            --c-border: #27272a;        /* 弱边框 */
            --c-border-hover: #3f3f46;  /* 强边框 */
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-base: 0 4px 12px rgba(0,0,0,0.5);
            --shadow-hover: 0 10px 30px rgba(0,0,0,0.8);
            --shadow-glow-gold: 0 0 20px rgba(212, 175, 55, 0.3);
            --transition-smooth: all 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
        }

        /* ==========================================================================
           02. 基础重置与排版 (Resets & Typography)
           ========================================================================== */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--c-bg-main);
            color: var(--c-text-primary);
            font-family: var(--f-sans);
            line-height: 1.6;
            overflow-x: hidden;
            position: relative;
        }

        /* 极客风选中状态 */
        ::selection {
            background: var(--c-red-accent);
            color: #fff;
        }

        /* 全局自定义滚动条 */
        ::-webkit-scrollbar {
            width: 10px;
            height: 10px;
        }
        ::-webkit-scrollbar-track {
            background: var(--c-bg-main);
            border-left: 1px solid var(--c-border);
        }
        ::-webkit-scrollbar-thumb {
            background: #333;
            border-radius: 5px;
            border: 2px solid var(--c-bg-main);
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--c-gold);
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-smooth);
        }

        ul, ol {
            list-style: none;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        /* 主体内容容器 */
        .container {
            width: 100%;
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
            z-index: 10;
        }

        /* ==========================================================================
           03. 背景视觉与特效层 (Background FX)
           ========================================================================== */
        .grid-layer {
            position: fixed;
            top: 0; left: 0; width: 100vw; height: 100vh;
            background-image: 
                linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
            background-size: 40px 40px;
            z-index: 0;
            pointer-events: none;
        }

        .bg-watermark {
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%) rotate(-15deg);
            font-family: var(--f-mono);
            font-size: 20vw;
            font-weight: 900;
            color: rgba(255,255,255,0.01);
            white-space: nowrap;
            z-index: 0;
            pointer-events: none;
            user-select: none;
            letter-spacing: -10px;
        }

        /* ==========================================================================
           04. 头部区域与跑马灯 (Header & Marquee)
           ========================================================================== */
        .marquee-strip {
            background: var(--c-gold);
            color: #000;
            padding: 8px 0;
            font-family: var(--f-mono);
            font-size: 14px;
            font-weight: 800;
            overflow: hidden;
            position: relative;
            z-index: 20;
            border-bottom: 2px solid #000;
        }

        .marquee-content {
            white-space: nowrap;
            display: inline-block;
            animation: marqueeScroll 30s linear infinite;
        }
        
        .marquee-content:hover {
            animation-play-state: paused;
        }

        header {
            padding: 80px 0 60px;
            text-align: center;
            position: relative;
            z-index: 10;
            background: radial-gradient(circle at center, rgba(212,175,55,0.05) 0%, transparent 60%);
        }

        .domain-title {
            font-family: var(--f-mono);
            color: var(--c-gold);
            font-size: 18px;
            font-weight: 800;
            letter-spacing: 4px;
            margin-bottom: 20px;
            text-shadow: 0 0 10px var(--c-gold-dim);
        }

        .dragon-totem {
            font-size: 80px;
            color: #fff;
            margin-bottom: 20px;
            filter: drop-shadow(0 0 20px rgba(255,255,255,0.2));
            animation: totemFloat 4s ease-in-out infinite;
        }

        .mega-slogan {
            font-family: var(--f-serif);
            font-size: 42px;
            font-weight: 900;
            color: #fff;
            line-height: 1.4;
            letter-spacing: 2px;
        }

        .slogan-highlight {
            display: block;
            color: var(--c-red-accent);
            font-family: var(--f-sans);
            font-size: 32px;
            margin-top: 10px;
            text-transform: uppercase;
            letter-spacing: 6px;
            text-shadow: 0 4px 15px var(--c-red-glow);
        }

        /* ==========================================================================
           05. 广告横幅系列 (Ads Banners - 合并与优化)
           ========================================================================== */
        /* MIRS 商业框架引流横幅 (赛博蓝主题) */
        .mirs-framework-banner {
            display: block;
            background: linear-gradient(135deg, #061e2a 0%, #02080a 100%);
            border: 1px solid #0a3344;
            border-left: 6px solid var(--c-cyan);
            border-radius: var(--radius-md);
            padding: 25px 35px;
            margin: 10px 0 40px 0;
            text-decoration: none;
            position: relative;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.6), inset 0 0 20px rgba(0,229,255,0.05);
            transition: var(--transition-smooth);
        }
        
        .mirs-framework-banner:hover {
            transform: translateY(-5px);
            border-color: var(--c-cyan);
            box-shadow: 0 15px 40px rgba(0,0,0,0.8), inset 0 0 40px rgba(0,229,255,0.15);
        }

        .mirs-framework-banner::before {
            content: '';
            position: absolute;
            top: 0; left: -100%;
            width: 40%; height: 100%;
            background: linear-gradient(to right, transparent, rgba(0,229,255,0.2), transparent);
            transform: skewX(-25deg);
            animation: cyber-scan 3.5s infinite;
        }

        .mirs-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
            position: relative;
            z-index: 2;
            border-bottom: 1px dashed rgba(0,229,255,0.2);
            padding-bottom: 15px;
        }

        .mirs-title {
            color: #fff;
            font-size: 20px;
            font-weight: 900;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .mirs-highlight {
            color: var(--c-cyan);
            font-family: var(--f-mono);
            font-size: 14px;
            background: rgba(0,229,255,0.1);
            padding: 4px 10px;
            border-radius: 4px;
            border: 1px solid rgba(0,229,255,0.3);
        }

        .mirs-btn {
            background: var(--c-cyan);
            color: #000;
            padding: 8px 20px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 800;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 0 15px rgba(0,229,255,0.4);
            transition: 0.3s;
        }

        .mirs-framework-banner:hover .mirs-btn {
            transform: scale(1.05);
            box-shadow: 0 0 25px rgba(0,229,255,0.6);
        }

        .mirs-content {
            position: relative;
            z-index: 2;
            color: #a1a1aa;
            font-size: 15px;
            line-height: 1.8;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }
        
        .mirs-content span {
            color: #fff;
            font-weight: 700;
        }

        /* 神器/软件广告位 (黑金警戒版) */
        .software-ad-banner {
            display: block;
            background: linear-gradient(135deg, #151518 0%, #0a0a0c 100%);
            border: 1px solid var(--c-border);
            border-left: 6px solid var(--c-gold);
            border-radius: var(--radius-md);
            padding: 25px 35px;
            margin: 15px 0 40px 0;
            box-shadow: var(--shadow-base), inset 0 0 20px rgba(212,175,55,0.02);
            position: relative;
            overflow: hidden;
            transition: var(--transition-smooth);
        }

        .software-ad-banner:hover {
            transform: translateY(-5px);
            border-color: var(--c-gold);
            box-shadow: var(--shadow-hover), inset 0 0 40px rgba(212,175,55,0.08);
        }

        .software-ad-banner::before {
            content: '';
            position: absolute;
            top: 0; left: -100%;
            width: 30%; height: 100%;
            background: linear-gradient(to right, transparent, rgba(212,175,55,0.15), transparent);
            transform: skewX(-30deg);
            animation: cyber-scan 4s infinite 1s;
        }

        .sad-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
            position: relative;
            z-index: 2;
            border-bottom: 1px dashed #333;
            padding-bottom: 18px;
        }

        .sad-title {
            color: #e4e4e7;
            font-family: var(--f-sans);
            font-size: 20px;
            font-weight: 900;
            display: flex;
            align-items: center;
            gap: 12px;
            letter-spacing: 1px;
        }

        .sad-highlight {
            color: #000;
            background: var(--c-gold);
            padding: 4px 10px;
            border-radius: 4px;
            font-family: var(--f-mono);
            font-size: 14px;
            font-weight: 900;
            box-shadow: 0 0 10px rgba(212,175,55,0.4);
        }

        .sad-btn {
            background: var(--c-gold);
            color: #000;
            padding: 10px 24px;
            border-radius: 4px;
            font-size: 15px;
            font-weight: 900;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: 0.3s;
            position: relative;
            overflow: hidden;
        }

        .sad-btn::after {
            content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%;
            background: repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(0,0,0,0.1) 10px, rgba(0,0,0,0.1) 20px);
        }

        .software-ad-banner:hover .sad-btn {
            background: var(--c-gold-bright);
            box-shadow: 0 0 15px rgba(212,175,55,0.5);
            transform: scale(1.02);
        }

        .sad-content {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            position: relative;
            z-index: 2;
        }

        .sad-item {
            color: #a1a1aa;
            font-size: 14px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            line-height: 1.6;
        }

        .sad-item i {
            color: var(--c-gold); 
            font-size: 14px;
            margin-top: 4px;
        }

        .sad-item strong { 
            color: #fff; 
        }

        /* ==========================================================================
           06. 模块公共标题头 (Zone Header)
           ========================================================================== */
        .zone-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin: 60px 0 30px 0;
            border-bottom: 2px solid #27272a;
            padding-bottom: 15px;
            position: relative;
        }

        .zh-title-box {
            display: flex;
            align-items: baseline;
            gap: 15px;
        }

        .zh-cn {
            font-size: 28px;
            font-weight: 900;
            color: #fff;
            letter-spacing: 2px;
            position: relative;
        }

        .zh-cn::before {
            content: '';
            position: absolute;
            left: -15px;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 70%;
            background: var(--c-gold);
            border-radius: 2px;
        }

        .zh-en {
            font-family: var(--f-mono);
            color: var(--c-text-muted);
            font-size: 14px;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
        }

        .zh-deco {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .zh-deco-line {
            width: 50px;
            height: 1px;
            background: var(--c-border-hover);
        }

        .zh-deco-num {
            font-family: var(--f-mono);
            font-size: 32px;
            font-weight: 900;
            color: #1f1f22;
        }

        /* ==========================================================================
           07. 核心教研矩阵 / 团队 (Team Matrix)
           ========================================================================== */
        .team-manifesto-v2 {
            display: flex;
            align-items: center;
            gap: 25px;
            background: linear-gradient(135deg, #1f1a10 0%, #111111 100%);
            border: 1px solid #3d3115;
            border-left: 6px solid var(--c-gold);
            padding: 30px 40px;
            border-radius: var(--radius-md);
            margin-bottom: 40px;
            box-shadow: 0 15px 30px rgba(0,0,0,0.6);
        }

        .tm-icon i {
            font-size: 55px;
            color: var(--c-gold);
            filter: drop-shadow(0 0 10px rgba(212,175,55,0.4));
        }

        .tm-text {
            margin: 0;
            color: var(--c-text-primary);
            font-size: 16px;
            line-height: 1.8;
            text-shadow: 0 2px 4px rgba(0,0,0,0.8);
        }

        .tm-text strong {
            color: var(--c-gold-bright);
            font-size: 18px;
            font-weight: 900;
            letter-spacing: 1px;
        }

        .tm-highlight {
            color: var(--c-gold);
            font-weight: bold;
            display: inline-block;
            margin-top: 5px;
            border-bottom: 1px dashed var(--c-gold);
        }

        .grid-team {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-bottom: 60px;
        }

        a.team-card {
            background: var(--c-bg-surface);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            padding: 30px 25px;
            position: relative;
            display: flex;
            flex-direction: column;
            transition: var(--transition-smooth);
            opacity: 0;
            animation: slideUpFade 0.6s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
            overflow: hidden;
            text-decoration: none;
            cursor: pointer;
        }

        .tc-top-accent {
            position: absolute; top: 0; left: 0; width: 100%; height: 4px;
            background: var(--m-color);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }

        a.team-card:hover {
            transform: translateY(-8px);
            border-color: var(--m-color);
            box-shadow: 0 15px 40px rgba(0,0,0,0.6), inset 0 0 20px rgba(255,255,255,0.03);
        }
        
        a.team-card:hover .tc-top-accent { transform: scaleX(1); }

        .tc-header {
            display: flex; align-items: center; gap: 18px; margin-bottom: 20px;
            position: relative; z-index: 2;
        }

        .tc-avatar {
            width: 65px; height: 65px;
            background: linear-gradient(135deg, #1f1f22 0%, #111 100%);
            border: 1px solid #333; border-radius: 12px;
            display: flex; justify-content: center; align-items: center;
            font-size: 28px; color: var(--m-color);
            box-shadow: 0 4px 10px rgba(0,0,0,0.5); transition: 0.3s;
        }
        
        a.team-card:hover .tc-avatar {
            background: var(--m-color); color: #fff;
            box-shadow: 0 0 20px var(--m-color);
        }

        .tc-meta { display: flex; flex-direction: column; }
        .tc-name { color: #fff; font-family: var(--f-serif); font-size: 22px; font-weight: 900; margin: 0 0 4px 0; letter-spacing: 1px; transition: 0.3s;}
        a.team-card:hover .tc-name { color: var(--m-color); }
        .tc-alias { color: var(--c-text-secondary); font-family: var(--f-mono); font-size: 12px; font-weight: bold; letter-spacing: 0.5px; }

        .tc-course-badge {
            display: inline-flex; align-items: center; gap: 8px;
            background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
            color: var(--m-color); padding: 8px 12px; border-radius: 6px;
            font-size: 13px; font-weight: 800; font-family: var(--f-sans); margin-bottom: 20px;
            position: relative; z-index: 2;
        }

        .tc-desc {
            color: var(--c-text-secondary); font-size: 14px; line-height: 1.7; margin-bottom: 25px; flex-grow: 1; text-align: justify;
            position: relative; z-index: 2;
        }

        .tc-tags {
            display: flex; flex-wrap: wrap; gap: 8px;
            border-top: 1px dashed var(--c-border); padding-top: 20px; margin-bottom: 25px;
            position: relative; z-index: 2;
        }
        
        .tc-tags span {
            background: var(--c-bg-elevated); border: 1px solid var(--c-border); color: var(--c-text-secondary);
            font-size: 11px; padding: 4px 10px; border-radius: 4px; font-family: var(--f-mono);
        }

        .tc-enter-btn {
            background: rgba(0,0,0,0.5);
            border: 1px solid #333;
            color: #888;
            padding: 12px 0;
            text-align: center;
            border-radius: 6px;
            font-size: 15px;
            font-weight: 800;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            transition: all 0.3s ease;
            margin-top: auto;
            position: relative; z-index: 2;
        }

        a.team-card:hover .tc-enter-btn {
            background: var(--m-color);
            border-color: var(--m-color);
            color: #ffffff;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
            box-shadow: 0 8px 20px rgba(0,0,0,0.4);
            transform: translateY(-2px);
        }
        
        a.team-card:hover .tc-enter-btn i {
            animation: doorSlide 0.5s ease forwards;
        }

        .tc-company-mark {
            position: absolute; bottom: -10px; right: 5px;
            font-family: var(--f-mono); font-size: 50px; font-weight: 900;
            color: rgba(255,255,255,0.015);
            user-select: none; pointer-events: none; z-index: 0;
        }

        /* ==========================================================================
           08. 教学档案/课程体系卡片 (Files / Archives)
           ========================================================================== */
        .grid-files {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 25px;
            margin-bottom: 50px;
        }

        .file-card {
            background: var(--c-bg-surface);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            padding: 30px;
            position: relative;
            transition: var(--transition-smooth);
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .file-card:hover {
            border-color: var(--c-gold);
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.6);
        }

        .fc-tag-badge {
            position: absolute;
            top: 20px;
            right: 20px;
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(255,255,255,0.1);
            color: var(--c-text-secondary);
            font-family: var(--f-mono);
            font-size: 12px;
            padding: 4px 10px;
            border-radius: 20px;
            transition: 0.3s;
        }

        .file-card:hover .fc-tag-badge {
            background: var(--c-gold-dim);
            color: var(--c-gold);
            border-color: var(--c-gold);
        }

        .fc-header {
            margin-bottom: 20px;
            position: relative;
            z-index: 2;
        }

        .fc-icon {
            font-size: 32px;
            color: var(--c-gold);
            margin-bottom: 15px;
            display: inline-block;
        }

        .fc-title {
            color: #fff;
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 5px;
        }

        .fc-sub {
            color: var(--c-text-muted);
            font-family: var(--f-mono);
            font-size: 13px;
        }

        .fc-desc {
            color: var(--c-text-secondary);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 30px;
            flex-grow: 1;
        }

        .file-links {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .fl-btn {
            flex: 1;
            text-align: center;
            background: var(--c-bg-elevated);
            color: #fff;
            border: 1px solid #333;
            padding: 10px 15px;
            border-radius: 6px;
            font-size: 14px;
            font-weight: bold;
            transition: 0.3s;
            cursor: pointer;
        }

        .fl-btn:hover {
            background: var(--c-gold);
            color: #000;
            border-color: var(--c-gold);
        }

        /* ==========================================================================
           09. 版本定制卡片 (Versions Market)
           ========================================================================== */
        .grid-versions {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-bottom: 50px;
        }

        .ver-card-new {
            background: var(--c-bg-surface);
            border: 1px solid var(--c-border);
            border-top: 4px solid var(--accent-color);
            border-radius: var(--radius-md);
            padding: 30px 25px;
            position: relative;
            transition: var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

        .ver-card-new:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.7);
            border-color: var(--accent-color);
        }

        .vc-shine {
            position: absolute;
            top: 0; left: -100%;
            width: 50%; height: 100%;
            background: linear-gradient(to right, transparent, rgba(255,255,255,0.03), transparent);
            transform: skewX(-20deg);
            transition: 0.5s;
        }

        .ver-card-new:hover .vc-shine {
            left: 200%;
        }

        .vc-top-bar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
            font-family: var(--f-mono);
            font-size: 13px;
        }

        .vc-code {
            color: var(--accent-color);
            font-weight: 800;
        }

        .vc-level {
            background: rgba(255,255,255,0.05);
            padding: 3px 8px;
            border-radius: 4px;
            color: #a1a1aa;
        }

        .vc-main-header {
            margin-bottom: 25px;
            border-bottom: 1px solid var(--c-border);
            padding-bottom: 20px;
        }

        .vc-title-cn {
            font-size: 24px;
            color: #fff;
            font-weight: 900;
            margin-bottom: 5px;
        }

        .vc-title-en {
            display: block;
            color: var(--c-text-muted);
            font-family: var(--f-mono);
            font-size: 12px;
            margin-bottom: 15px;
        }

        .vc-price-box {
            display: flex;
            align-items: baseline;
            color: var(--accent-color);
        }

        .vc-symbol { font-size: 18px; font-weight: bold; margin-right: 5px; }
        .vc-amount { font-size: 36px; font-weight: 900; letter-spacing: -1px; }
        .vc-unit { font-size: 14px; color: var(--c-text-secondary); margin-left: 8px; }

        .vc-specs-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
            margin-bottom: 25px;
        }

        .vc-spec-item {
            background: var(--c-bg-elevated);
            padding: 10px 15px;
            border-radius: 6px;
            border: 1px solid #27272a;
        }

        .vc-spec-label {
            display: block;
            font-size: 12px;
            color: var(--c-text-muted);
            margin-bottom: 4px;
        }

        .vc-spec-val {
            display: block;
            font-size: 14px;
            color: #fff;
            font-weight: bold;
        }

        .vc-feat-list {
            margin-bottom: 30px;
            flex-grow: 1;
        }

        .vc-feat-list li {
            position: relative;
            padding-left: 20px;
            margin-bottom: 10px;
            color: var(--c-text-secondary);
            font-size: 14px;
        }

        .vc-feat-list li::before {
            content: '▹';
            position: absolute;
            left: 0;
            color: var(--accent-color);
            font-family: var(--f-mono);
            font-weight: bold;
        }

        .vc-dashboard {
            background: var(--c-bg-main);
            padding: 15px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--c-border);
        }

        .vc-meter-box {
            margin-bottom: 15px;
        }

        .vc-meter-label {
            font-size: 11px;
            color: var(--c-text-secondary);
            font-family: var(--f-mono);
            margin-bottom: 8px;
        }

        .vc-meter-track {
            height: 6px;
            background: #27272a;
            border-radius: 3px;
            overflow: hidden;
        }

        .vc-meter-fill {
            height: 100%;
            background: var(--accent-color);
            border-radius: 3px;
            box-shadow: 0 0 10px var(--accent-color);
        }

        .vc-meta-row {
            display: flex;
            justify-content: space-between;
            font-size: 12px;
            color: #71717a;
        }
        
        .vc-meta-row i {
            color: var(--accent-color);
            margin-right: 5px;
        }

        /* ==========================================================================
           10. 开发军火库与私房菜 (Arsenal & VIP Custom)
           ========================================================================== */
        .grid-armory {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
            margin-bottom: 50px;
        }

        .arsenal-card {
            background: var(--c-bg-surface);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-sm);
            padding: 25px;
            display: flex;
            flex-direction: column;
            transition: var(--transition-smooth);
        }

        .arsenal-card:hover {
            background: #18181b;
            border-color: var(--c-gold);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .ac-header {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            margin-bottom: 20px;
        }

        .ac-icon {
            font-size: 28px;
            color: var(--c-gold);
        }

        .ac-meta {
            text-align: right;
            font-family: var(--f-mono);
        }

        .ac-id {
            display: block;
            color: var(--c-text-muted);
            font-size: 12px;
            margin-bottom: 4px;
        }

        .ac-tag {
            background: rgba(212,175,55,0.1);
            color: var(--c-gold);
            padding: 2px 6px;
            border-radius: 4px;
            font-size: 10px;
            font-weight: bold;
        }

        .ac-body h3 {
            color: #fff;
            font-size: 18px;
            margin-bottom: 10px;
        }

        .ac-desc {
            color: var(--c-text-secondary);
            font-size: 13px;
            line-height: 1.6;
        }

        /* 私房菜 */
        .grid-custom {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-bottom: 50px;
        }

        .vip-card {
            background: linear-gradient(45deg, #121214 0%, #18181b 100%);
            border: 1px solid var(--c-border);
            padding: 30px;
            border-radius: var(--radius-md);
            position: relative;
            overflow: hidden;
            transition: var(--transition-smooth);
        }

        .vip-card::after {
            content: '';
            position: absolute;
            right: -20px; bottom: -20px;
            width: 100px; height: 100px;
            background: radial-gradient(circle, var(--c-gold-dim) 0%, transparent 70%);
            opacity: 0;
            transition: 0.5s;
        }

        .vip-card:hover {
            border-color: var(--c-gold);
            transform: scale(1.02);
            box-shadow: var(--shadow-hover);
        }
        
        .vip-card:hover::after { opacity: 1; }

        .vip-info h3 {
            color: var(--c-gold);
            font-size: 20px;
            margin-bottom: 10px;
            position: relative;
            z-index: 2;
        }

        .vip-info p {
            color: var(--c-text-secondary);
            font-size: 14px;
            position: relative;
            z-index: 2;
        }

        /* ==========================================================================
           11. 课程收费标准 (Pricing Tiers)
           ========================================================================== */
        .pricing-header-wrap {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .btn-global-sys {
            background: transparent;
            border: 1px solid var(--c-gold);
            color: var(--c-gold);
            padding: 8px 16px;
            border-radius: 30px;
            cursor: pointer;
            font-size: 14px;
            font-weight: bold;
            transition: 0.3s;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .btn-global-sys:hover {
            background: var(--c-gold);
            color: #000;
            box-shadow: 0 0 15px var(--c-gold-dim);
        }

        .chu-pricing-wrap {
            display: grid;
            grid-template-columns: 1fr;
            gap: 30px;
            margin-bottom: 60px;
        }

        .chu-tier-card {
            background: var(--c-bg-surface);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            padding: 0;
            display: flex;
            flex-direction: row;
            overflow: hidden;
            animation: slideUpFade 0.6s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
            opacity: 0;
        }

        .chu-tier-card.premium {
            border-color: var(--c-gold);
            box-shadow: 0 0 30px rgba(212,175,55,0.1);
        }
        
        .chu-tier-card.premium .chu-tier-price-box {
            background: linear-gradient(135deg, #2a2211 0%, #111 100%);
        }
        
        .chu-tier-card.premium .chu-tier-price-box h2 {
            color: var(--c-gold-bright);
            text-shadow: 0 0 15px rgba(212,175,55,0.5);
        }

        .chu-tier-price-box {
            background: var(--c-bg-elevated);
            width: 250px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-right: 1px solid var(--c-border);
            padding: 30px;
        }

        .chu-tier-price-box h2 {
            font-family: var(--f-mono);
            font-size: 42px;
            color: #fff;
            margin: 0;
            letter-spacing: -1px;
        }

        .chu-tier-courses {
            flex-grow: 1;
            padding: 20px 30px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .chu-course-row {
            display: grid;
            grid-template-columns: 100px 1.5fr 2fr auto;
            align-items: center;
            gap: 20px;
            padding: 15px 0;
            border-bottom: 1px dashed var(--c-border);
        }
        
        .chu-course-row:last-child {
            border-bottom: none;
        }

        .chu-tag {
            text-align: center;
            font-size: 12px;
            font-weight: bold;
            padding: 4px 8px;
            border-radius: 4px;
            font-family: var(--f-mono);
        }

        /* 标签色彩基类 */
        .tag-base { background: #333; color: #fff; }
        .tag-adv { background: rgba(255, 51, 102, 0.2); color: var(--c-red-accent); border: 1px solid var(--c-red-glow); }
        .tag-core { background: rgba(0, 229, 255, 0.1); color: var(--c-cyan); border: 1px solid rgba(0,229,255,0.3); }

        .chu-name {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
        }

        .chu-note {
            color: var(--c-text-secondary);
            font-size: 13px;
        }

        /* ==========================================================================
           12. 我们的真诚承诺 (Promises)
           ========================================================================== */
        .chu-promise-wrap {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 20px;
            margin-bottom: 60px;
        }

        .promise-card {
            background: var(--c-bg-surface);
            border: 1px solid var(--c-border);
            padding: 30px;
            border-radius: var(--radius-sm);
            transition: var(--transition-smooth);
            opacity: 0;
            animation: slideUpFade 0.6s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
        }

        .promise-card:hover {
            border-color: var(--c-gold);
            transform: translateY(-5px);
            background: #18181b;
        }

        .promise-card.highlight {
            grid-column: 1 / -1; /* 跨越所有列 */
            background: linear-gradient(135deg, rgba(212,175,55,0.05) 0%, transparent 100%);
            border-color: var(--c-gold-dim);
            text-align: center;
            padding: 40px;
        }

        .promise-card.highlight .promise-title {
            color: var(--c-gold);
            font-size: 20px;
            max-width: 800px;
            margin: 0 auto 15px auto;
        }

        .promise-card.highlight .promise-desc {
            max-width: 800px;
            margin: 0 auto;
        }

        .promise-icon {
            font-size: 24px;
            color: var(--c-gold);
            margin-bottom: 15px;
            transition: 0.3s;
        }
        
        .promise-card:hover .promise-icon {
            transform: rotateY(180deg);
            color: var(--c-gold-bright);
        }

        .promise-title {
            color: #fff;
            font-size: 16px;
            font-weight: bold;
            margin-bottom: 10px;
        }

        .promise-desc {
            color: var(--c-text-secondary);
            font-size: 13px;
            line-height: 1.6;
        }

        /* ==========================================================================
           13. 强力转化横幅 (Action Banner)
           ========================================================================== */
        .chu-action-banner {
            background: linear-gradient(135deg, var(--c-gold) 0%, #aa8c2c 100%);
            border-radius: var(--radius-lg);
            padding: 40px 50px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: 0 15px 40px rgba(212,175,55,0.2);
            margin-bottom: 80px;
            opacity: 0;
            animation: slideUpFade 0.6s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
        }

        .chu-action-banner::before {
            content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
            background: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI0IiBoZWlnaHQ9IjQiPgo8cmVjdCB3aWR0aD0iNCIgaGVpZ2h0PSI0IiBmaWxsPSIjZmZmIiBmaWxsLW9wYWNpdHk9IjAuMDUiLz4KPC9zdmc+') repeat;
            pointer-events: none;
        }

        .chu-action-title {
            font-family: var(--f-mono);
            font-size: 16px;
            font-weight: 900;
            color: rgba(0,0,0,0.6);
            margin-bottom: 25px;
            letter-spacing: 2px;
        }

        .chu-action-info {
            display: flex;
            justify-content: center;
            gap: 60px;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }

        .chu-contact-group {
            display: flex;
            align-items: center;
            gap: 15px;
            background: rgba(0,0,0,0.8);
            padding: 15px 30px;
            border-radius: 50px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
            transition: 0.3s;
        }
        
        .chu-contact-group:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.4);
        }

        .chu-contact-group i {
            font-size: 24px;
            color: var(--c-gold);
        }

        .chu-contact-label {
            color: var(--c-text-secondary);
            font-size: 14px;
            font-weight: bold;
        }

        .chu-contact-text {
            color: #fff;
            font-size: 20px;
            font-family: var(--f-mono);
            font-weight: 900;
            letter-spacing: 1px;
        }

        .chu-contact-text .divider {
            color: #555;
            margin: 0 10px;
            font-weight: normal;
        }

        /* ==========================================================================
           14. 侧边悬浮导航 (Side Dock) —— 修复与整合版
           ========================================================================== */
        .side-dock {
            position: fixed;
            right: 20px;
            top: 50%;
            /* 默认展开状态：Y轴保证垂直居中，X轴0偏移 */
            transform: translate(0, -50%);
            width: 220px;
            background: var(--c-bg-glass);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            padding: 20px;
            z-index: 100;
            box-shadow: 0 10px 30px rgba(0,0,0,0.8);
            /* 将平滑移动融合进全局过渡 */
            transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1), box-shadow 0.3s, border-color 0.3s, opacity 0.4s ease;
        }

        .side-dock:hover {
            border-color: var(--c-gold-dim);
            box-shadow: var(--shadow-glow-gold);
        }

        /* 向下滑动后的收起状态 */
        .side-dock.is-retracted {
            /* 往右侧收缩：同时保持 Y 轴居中（-50%），X轴向右滑行。
               因为 base right 是 20px，X移动 100% + 10px 刚好躲到屏幕边缘外，只留一点缝隙 */
            transform: translate(calc(100% + 10px), -50%);
            opacity: 0.5;
        }

        /* 收起状态下，鼠标滑过临时展开 */
        .side-dock.is-retracted:hover {
            transform: translate(0, -50%);
            opacity: 1;
        }

        /* 绘制收缩状态下的小把手（左侧金色箭头） */
        .side-dock::before {
            content: "◀";
            position: absolute;
            left: -18px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--c-gold); 
            color: #000;
            width: 18px;
            height: 60px;
            line-height: 60px;
            text-align: center;
            font-size: 10px;
            border-radius: 6px 0 0 6px;
            cursor: pointer;
            opacity: 0; 
            pointer-events: none;
            transition: opacity 0.3s;
            box-shadow: -2px 0 5px rgba(0,0,0,0.5);
        }

        /* 只有当侧边栏收缩时，才显示把手 */
        .side-dock.is-retracted::before { opacity: 1; }
        /* 临时展开时，隐藏把手 */
        .side-dock.is-retracted:hover::before { opacity: 0; }

        .sd-header {
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 1px dashed var(--c-border);
        }

        .sd-title {
            display: block;
            color: #fff;
            font-size: 15px;
            font-weight: bold;
        }

        .sd-id {
            color: var(--c-gold);
            font-family: var(--f-mono);
            font-size: 10px;
        }

        .sd-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-bottom: 20px;
        }

        .sd-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--c-text-secondary);
            font-size: 13px;
            padding: 8px 10px;
            border-radius: 4px;
            transition: 0.2s;
        }

        .sd-item:hover {
            background: rgba(212,175,55,0.1);
            color: var(--c-gold);
            padding-left: 15px;
        }

        .sd-tag {
            font-family: var(--f-mono);
            font-size: 10px;
            color: var(--c-text-muted);
        }

        .sd-item:hover .sd-tag {
            color: var(--c-gold);
        }

        .sd-top {
            text-align: center;
            background: #18181b;
            color: #fff;
            padding: 10px;
            border-radius: 4px;
            font-size: 12px;
            font-family: var(--f-mono);
            font-weight: bold;
            cursor: pointer;
            border: 1px solid #333;
            transition: 0.3s;
        }

        .sd-top:hover {
            background: var(--c-gold);
            color: #000;
            border-color: var(--c-gold);
        }

        /* ==========================================================================
           15. 公司页脚 (Company Footer)
           ========================================================================== */
        .company-footer {
            background: #050505;
            border-top: 1px solid #1f1f22;
            padding: 80px 0 30px;
            position: relative;
            z-index: 10;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 50px;
            margin-bottom: 60px;
        }

        .f-col h4 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 10px;
        }

        .f-col h4::after {
            content: ''; position: absolute; left: 0; bottom: 0;
            width: 30px; height: 2px; background: var(--c-gold);
        }

        .f-logo {
            font-family: var(--f-mono);
            font-size: 24px;
            font-weight: 900;
            color: #fff;
            display: block;
            margin-bottom: 20px;
            letter-spacing: 2px;
        }

        .f-desc {
            color: var(--c-text-secondary);
            font-size: 13px;
            line-height: 1.8;
            max-width: 400px;
        }

        .f-desc strong {
            color: #fff;
        }

        .f-links {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .f-links li, .f-links a {
            color: var(--c-text-secondary);
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 10px;
            cursor: pointer;
        }

        .f-links a:hover {
            color: var(--c-gold);
        }

        .f-links i {
            font-size: 12px;
            color: #555;
            transition: 0.3s;
        }
        
        .f-links a:hover i {
            color: var(--c-gold);
            transform: translateX(3px);
        }

        .f-bottom {
            border-top: 1px solid #1f1f22;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .f-copy {
            color: var(--c-text-muted);
            font-size: 12px;
            font-family: var(--f-mono);
        }

        .f-tech {
            display: flex;
            gap: 15px;
        }

        .f-tech span {
            color: #555;
            font-size: 12px;
            font-family: var(--f-mono);
        }

        .footer-links a {
            color: var(--c-text-muted);
            font-size: 12px;
        }
        .footer-links a:hover { color: #fff; }

        /* ==========================================================================
           16. 模态弹窗组件 (Modals)
           ========================================================================== */
        .modal-overlay, .syl-modal-overlay {
            position: fixed;
            top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(0,0,0,0.85);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            z-index: 9999;
            display: none;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }

        .modal-box, .syl-modal-box {
            background: var(--c-bg-surface);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            padding: 40px;
            text-align: center;
            position: relative;
            box-shadow: 0 20px 50px rgba(0,0,0,0.9);
            animation: modalScaleUp 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        .modal-box {
            width: 100%;
            max-width: 450px;
        }

        .syl-modal-box {
            width: 100%;
            max-width: 800px;
            max-height: 85vh;
            display: flex;
            flex-direction: column;
            padding: 30px;
        }

        .m-title {
            font-family: var(--f-mono);
            color: var(--c-gold);
            font-weight: 800;
            font-size: 18px;
            margin-bottom: 10px;
        }

        .m-sub {
            color: var(--c-text-muted);
            font-size: 12px;
            font-family: var(--f-mono);
            margin-bottom: 30px;
        }

        .m-code-box {
            background: #000;
            border: 1px dashed var(--c-border-hover);
            color: #fff;
            font-family: var(--f-mono);
            font-size: 32px;
            font-weight: bold;
            padding: 20px;
            border-radius: var(--radius-sm);
            margin-bottom: 30px;
            letter-spacing: 2px;
        }

        .m-btn, .syl-btn-close {
            background: var(--c-gold);
            color: #000;
            border: none;
            padding: 15px 30px;
            border-radius: 30px;
            font-size: 16px;
            font-weight: 900;
            cursor: pointer;
            width: 100%;
            transition: 0.3s;
            font-family: var(--f-sans);
        }

        .m-btn:hover {
            background: var(--c-gold-bright);
            box-shadow: 0 5px 15px rgba(212,175,55,0.4);
        }

        .m-close {
            background: transparent;
            border: none;
            color: var(--c-text-muted);
            margin-top: 20px;
            cursor: pointer;
            font-family: var(--f-mono);
            font-size: 12px;
            transition: 0.3s;
        }

        .m-close:hover { color: #fff; }

        /* 大纲弹窗内部结构 */
        .syl-modal-header {
            margin-bottom: 25px;
            padding-bottom: 15px;
            border-bottom: 1px solid var(--c-border);
            text-align: left;
        }
        
        .syl-modal-title {
            color: #fff;
            font-size: 20px;
            font-weight: bold;
        }
        
        .syl-modal-title .slash { color: var(--c-gold); margin-right: 10px; font-family: var(--f-mono); }

        .syl-modal-body {
            flex-grow: 1;
            overflow-y: auto;
            text-align: left;
            padding-right: 15px;
            margin-bottom: 25px;
            color: var(--c-text-secondary);
            font-size: 14px;
            line-height: 1.8;
        }

        /* 针对弹窗内部定制滚动条 */
        .syl-modal-body::-webkit-scrollbar { width: 6px; }
        .syl-modal-body::-webkit-scrollbar-track { background: transparent; }
        .syl-modal-body::-webkit-scrollbar-thumb { background: #333; border-radius: 3px; }
        .syl-modal-body::-webkit-scrollbar-thumb:hover { background: var(--c-gold); }

        .syl-btn-close {
            background: #1f1f22;
            color: #fff;
            border: 1px solid #333;
            width: auto;
            align-self: center;
        }
        
        .syl-btn-close:hover {
            background: #ff3366;
            border-color: #ff3366;
            box-shadow: 0 0 15px rgba(255,51,102,0.4);
        }

        /* ==========================================================================
           17. 关键帧动画特效 (Keyframes)
           ========================================================================== */
        @keyframes cyber-scan {
            0% { left: -100%; }
            20% { left: 200%; }
            100% { left: 200%; }
        }

        @keyframes marqueeScroll {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }

        @keyframes slideUpFade {
            0% { opacity: 0; transform: translateY(30px); }
            100% { opacity: 1; transform: translateY(0); }
        }

        @keyframes totemFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-15px); }
        }

        @keyframes doorSlide {
            0% { transform: translateX(0); }
            50% { transform: translateX(5px); }
            100% { transform: translateX(0); }
        }

        @keyframes modalScaleUp {
            0% { opacity: 0; transform: scale(0.9); }
            100% { opacity: 1; transform: scale(1); }
        }

        /* ==========================================================================
           18. 全端响应式适配 (Responsive Media Queries)
           ========================================================================== */
        /* 大屏适配 (Max-width: 1200px) */
        @media (max-width: 1200px) {
            .side-dock { display: none; } /* 隐藏侧边栏 */
            .chu-course-row { grid-template-columns: 80px 1fr 1fr auto; }
        }

        /* 平板横屏/小尺寸笔记本 (Max-width: 992px) */
        @media (max-width: 992px) {
            .grid-team { grid-template-columns: repeat(2, 1fr); }
            .team-manifesto-v2 { padding: 20px; flex-direction: column; text-align: center; gap: 15px; }
            .tm-icon i { font-size: 40px; }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
            .chu-tier-card { flex-direction: column; }
            .chu-tier-price-box { width: 100%; border-right: none; border-bottom: 1px solid var(--c-border); padding: 20px; }
            .mega-slogan { font-size: 32px; }
            .slogan-highlight { font-size: 24px; }
        }

        /* 平板竖屏/大屏手机 (Max-width: 768px) */
        @media (max-width: 768px) {
            .grid-team { grid-template-columns: 1fr; }
            .grid-files, .grid-versions, .grid-armory, .grid-custom, .chu-promise-wrap { grid-template-columns: 1fr; }
            .sad-content, .mirs-content { grid-template-columns: 1fr; gap: 12px; }
            .sad-header, .mirs-header { flex-direction: column; align-items: flex-start; gap: 15px; }
            
            .chu-action-info { flex-direction: column; gap: 20px; }
            .chu-action-banner { padding: 30px 20px; }
            
            .zone-header { flex-direction: column; align-items: flex-start; gap: 10px; margin: 40px 0 20px 0;}
            .zh-deco { display: none; } /* 移动端隐藏右侧线条编号 */
            
            .pricing-header-wrap { flex-direction: column; align-items: flex-start; gap: 15px; }
            .chu-course-row { grid-template-columns: 1fr; gap: 8px; text-align: center; border-bottom: 1px solid #222; padding: 20px 0;}
            .chu-tag { display: inline-block; width: max-content; margin: 0 auto; }
            
            .footer-grid { grid-template-columns: 1fr; gap: 30px; }
            .f-bottom { flex-direction: column; text-align: center; }
            .f-tech { justify-content: center; flex-wrap: wrap; }
        }

        /* 小屏手机 (Max-width: 480px) */
        @media (max-width: 480px) {
            header { padding: 50px 0 30px; }
            .mega-slogan { font-size: 24px; }
            .slogan-highlight { font-size: 18px; letter-spacing: 2px; }
            .dragon-totem { font-size: 60px; }
            
            .zh-cn { font-size: 22px; }
            .zh-en { font-size: 12px; }
            
            .file-card { padding: 20px; }
            .fc-title { font-size: 18px; }
            
            .vc-title-cn { font-size: 20px; }
            .vc-amount { font-size: 28px; }
            .vc-specs-grid { grid-template-columns: 1fr; }
            
            .chu-contact-text { font-size: 16px; }
            .chu-contact-group { padding: 12px 20px; }
            
            .syl-modal-box { padding: 20px; }
            .syl-modal-title { font-size: 16px; }
        }
        
        /* ==========================================================================
           11. 全新 V3版：课程收费标准 (Cyberpunk Pricing Grid)
           ========================================================================== */
        .pricing-header-wrap {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .btn-global-sys {
            background: transparent;
            border: 1px solid var(--c-gold);
            color: var(--c-gold);
            padding: 8px 16px;
            border-radius: 30px;
            cursor: pointer;
            font-size: 14px;
            font-weight: bold;
            transition: 0.3s;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .btn-global-sys:hover {
            background: var(--c-gold);
            color: #000;
            box-shadow: 0 0 15px var(--c-gold-dim);
        }

        /* V3版 网格容器 */
        .pricing-grid-v3 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
            margin-bottom: 60px;
        }

        /* V3版 价格卡片 */
        .pg-card {
            background: linear-gradient(180deg, var(--c-bg-surface) 0%, var(--c-bg-main) 100%);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            position: relative;
            overflow: hidden;
            transition: var(--transition-smooth);
            display: flex;
            flex-direction: column;
            animation: slideUpFade 0.6s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
            opacity: 0;
        }

        .pg-card:hover {
            transform: translateY(-8px);
            border-color: #52525b;
            box-shadow: 0 15px 40px rgba(0,0,0,0.6);
        }

        /* 高级版特有样式 */
        .pg-card.is-premium {
            border-color: rgba(212,175,55,0.4);
            background: linear-gradient(180deg, #1a160c 0%, var(--c-bg-main) 100%);
        }

        .pg-card.is-premium:hover {
            border-color: var(--c-gold);
            box-shadow: 0 15px 40px rgba(212,175,55,0.15);
        }

        /* 卡片头部：价格与徽章 */
        .pg-header {
            padding: 35px 35px 25px;
            border-bottom: 1px solid var(--c-border);
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            position: relative;
        }

        .pg-card.is-premium .pg-header {
            border-bottom-color: rgba(212,175,55,0.2);
        }

        .pg-price-wrap {
            display: flex;
            align-items: baseline;
            gap: 5px;
        }

        .pg-currency {
            color: var(--c-gold);
            font-size: 22px;
            font-weight: bold;
        }

        .pg-price {
            color: #fff;
            font-family: var(--f-mono);
            font-size: 52px;
            font-weight: 900;
            line-height: 1;
            letter-spacing: -2px;
        }

        .pg-card.is-premium .pg-price {
            color: var(--c-gold-bright);
            text-shadow: 0 0 20px rgba(212,175,55,0.3);
        }

        .pg-badge {
            background: var(--c-bg-elevated);
            border: 1px solid var(--c-border);
            color: var(--c-text-secondary);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-family: var(--f-mono);
            font-weight: bold;
        }

        .pg-card.is-premium .pg-badge {
            background: var(--c-gold);
            color: #000;
            border-color: var(--c-gold);
            box-shadow: 0 0 15px rgba(212,175,55,0.4);
        }

        /* 卡片身体：课程列表 */
        .pg-body {
            padding: 10px 35px 35px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .pg-course-item {
            padding-top: 25px;
            border-bottom: 1px dashed var(--c-border);
            padding-bottom: 25px;
        }
        
        .pg-course-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .pg-course-title-row {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
        }

        .pg-course-name {
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            letter-spacing: 0.5px;
        }

        /* 标签色彩基类 */
        .chu-tag { text-align: center; font-size: 12px; font-weight: bold; padding: 4px 8px; border-radius: 4px; font-family: var(--f-mono); }
        .chu-tag.video { background: rgba(59, 130, 246, 0.15); color: #60a5fa; border: 1px solid rgba(59, 130, 246, 0.3); }
        .chu-tag.online { background: rgba(16, 185, 129, 0.15); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.3); }
        .chu-tag.offline { background: rgba(245, 158, 11, 0.15); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.3); }

        .pg-course-desc {
            color: var(--c-text-secondary);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .pg-btn-syl {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.03);
            border: 1px solid rgba(255,255,255,0.1);
            color: var(--c-gold);
            padding: 8px 18px;
            border-radius: 4px;
            font-size: 13px;
            font-weight: bold;
            cursor: pointer;
            transition: var(--transition-smooth);
        }

        .pg-btn-syl:hover {
            background: var(--c-gold);
            color: #000;
            border-color: var(--c-gold);
            transform: translateX(5px); /* 鼠标放上去有微微向右的极客动效 */
        }

        /* 响应式：小屏幕变单列 */
        @media (max-width: 900px) {
            .pricing-grid-v3 { grid-template-columns: 1fr; }
            .pg-header, .pg-body { padding: 25px; }
            .pg-price { font-size: 42px; }
        }