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

        :root {
            --bg-deep: #05050a;
            --bg-card: #0c0c16;
            --bg-card2: #10101e;
            --gold: #c9a23c;
            --gold-light: #e8cc7a;
            --gold-dim: #7a5e22;
            --blue: #4a7cff;
            --blue-light: #7aa4ff;
            --purple: #8b5cf6;
            --purple-light: #a78bfa;
            --cyan: #06b6d4;
            --pink: #ec4899;
            --red: #ef4444;
            --orange: #f97316;
            --text-primary: #eeeef2;
            --text-secondary: #8888a0;
            --text-dim: #44445a;
            --border: #1a1a30;
        }

        html { scroll-behavior: smooth; }

        body {
            font-family: 'Noto Sans SC', -apple-system, sans-serif;
            background: var(--bg-deep);
            color: var(--text-primary);
            overflow-x: hidden;
            line-height: 1.6;
        }

        /* ===== Canvas粒子背景 ===== */
        #particle-canvas {
            position: fixed;
            top: 0; left: 0;
            width: 100%; height: 100%;
            pointer-events: none;
            z-index: 0;
        }

        /* ===== 导航 ===== */
        nav {
            position: fixed;
            top: 0; left: 0; right: 0;
            z-index: 200;
            padding: 20px 60px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        nav.scrolled {
            padding: 14px 60px;
            background: rgba(5, 5, 10, 0.92);
            backdrop-filter: blur(24px);
            border-bottom: 1px solid rgba(201, 162, 60, 0.08);
        }

        .nav-logo {
            font-size: 22px;
            font-weight: 900;
            color: var(--gold);
            letter-spacing: 3px;
        }

        .nav-logo span {
            color: var(--text-dim);
            font-weight: 400;
            font-size: 14px;
            margin-left: 12px;
            letter-spacing: 1px;
        }

        .nav-links {
            display: flex;
            gap: 40px;
            list-style: none;
        }

        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 0.5px;
            transition: color 0.3s;
            position: relative;
            padding-bottom: 4px;
        }

        .nav-links a:hover { color: var(--gold-light); }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0; left: 0;
            width: 0; height: 1px;
            background: var(--gold);
            transition: width 0.3s;
        }

        .nav-links a:hover::after { width: 100%; }

        /* ===== 全屏Section通用 ===== */
        .fullscreen {
            position: relative;
            z-index: 1;
            min-height: 100vh;
            display: flex;
            align-items: center;
        }

        /* ===== Hero ===== */
        .hero {
            padding: 0 80px;
            overflow: hidden;
        }

        .hero-inner {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 80px;
            align-items: center;
        }

        .hero-left { position: relative; }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 8px 24px;
            border: 1px solid var(--gold-dim);
            border-radius: 100px;
            font-size: 14px;
            color: var(--gold-light);
            background: rgba(201, 162, 60, 0.05);
            margin-bottom: 40px;
        }

        .hero-badge .pulse-dot {
            width: 8px; height: 8px;
            border-radius: 50%;
            background: var(--gold);
            animation: pulse 2s ease-in-out infinite;
        }

        @keyframes pulse {
            0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(201,162,60,0.4); }
            50% { opacity: 0.8; box-shadow: 0 0 0 8px rgba(201,162,60,0); }
        }

        .hero-title {
            font-size: 80px;
            font-weight: 900;
            line-height: 1.05;
            margin-bottom: 16px;
            letter-spacing: -2px;
        }

        .hero-title .v6 {
            background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold) 50%, var(--gold-dim) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 24px;
            font-weight: 300;
            color: var(--text-secondary);
            margin-bottom: 48px;
            line-height: 1.5;
        }

        .hero-subtitle strong {
            color: var(--text-primary);
            font-weight: 500;
        }

        .hero-chips {
            display: flex;
            gap: 16px;
            margin-bottom: 40px;
        }

        .hero-chip {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 24px;
            background: rgba(255,255,255,0.03);
            border: 1px solid var(--border);
            border-radius: 14px;
            font-size: 15px;
            font-weight: 500;
            transition: all 0.3s;
            cursor: default;
        }

        .hero-chip:hover {
            border-color: rgba(201,162,60,0.3);
            background: rgba(201,162,60,0.04);
            transform: translateY(-2px);
        }

        .chip-dot {
            width: 8px; height: 8px;
            border-radius: 50%;
        }

        .hero-slogan {
            font-size: 15px;
            color: var(--text-dim);
            letter-spacing: 6px;
            text-transform: uppercase;
        }

        .hero-slogan em {
            font-style: normal;
            color: var(--gold);
        }

        /* Hero右侧 - 大视觉区 */
        .hero-visual {
            position: relative;
            height: 600px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .orbit-ring {
            position: absolute;
            border-radius: 50%;
            border: 1px solid;
            animation: orbit-spin linear infinite;
        }

        .orbit-ring-1 {
            width: 480px; height: 480px;
            border-color: rgba(74,124,255,0.12);
            animation-duration: 30s;
        }

        .orbit-ring-2 {
            width: 380px; height: 380px;
            border-color: rgba(139,92,246,0.15);
            animation-duration: 22s;
            animation-direction: reverse;
        }

        .orbit-ring-3 {
            width: 260px; height: 260px;
            border-color: rgba(201,162,60,0.15);
            animation-duration: 16s;
        }

        @keyframes orbit-spin {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }

        .orbit-node {
            position: absolute;
            width: 56px; height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 700;
            box-shadow: 0 0 30px rgba(0,0,0,0.5);
            z-index: 2;
        }

        .orbit-node-1 {
            top: 50%; left: 50%;
            transform: translate(-50%, -50%);
            width: 100px; height: 100px;
            border-radius: 24px;
            font-size: 36px;
            background: linear-gradient(135deg, rgba(201,162,60,0.2), rgba(201,162,60,0.05));
            border: 1px solid rgba(201,162,60,0.3);
            color: var(--gold);
            z-index: 3;
        }

        .orbit-node-2 {
            top: -28px; left: calc(50% - 28px);
            background: rgba(74,124,255,0.12);
            border: 1px solid rgba(74,124,255,0.3);
        }

        .orbit-node-3 {
            bottom: 20px; right: -10px;
            background: rgba(139,92,246,0.12);
            border: 1px solid rgba(139,92,246,0.3);
        }

        .orbit-node-4 {
            bottom: 40px; left: -20px;
            background: rgba(6,182,212,0.12);
            border: 1px solid rgba(6,182,212,0.3);
        }

        .orbit-node-5 {
            top: 40px; right: 60px;
            background: rgba(236,72,153,0.12);
            border: 1px solid rgba(236,72,153,0.3);
        }

        .orbit-label {
            position: absolute;
            font-size: 11px;
            color: var(--text-dim);
            white-space: nowrap;
            letter-spacing: 1px;
        }

        .orbit-label-2 { top: -28px; left: calc(50% + 36px); color: var(--blue-light); }
        .orbit-label-3 { bottom: 20px; right: -80px; color: var(--purple-light); }
        .orbit-label-4 { bottom: 40px; left: -90px; color: var(--cyan); }
        .orbit-label-5 { top: 40px; right: 20px; color: var(--pink); }

        /* 光晕效果 */
        .hero-glow {
            position: absolute;
            width: 500px; height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(139,92,246,0.08) 0%, transparent 70%);
            top: 50%; left: 50%;
            transform: translate(-50%, -50%);
            animation: glow-pulse 4s ease-in-out infinite;
        }

        @keyframes glow-pulse {
            0%, 100% { opacity: 0.6; transform: translate(-50%, -50%) scale(1); }
            50% { opacity: 1; transform: translate(-50%, -50%) scale(1.1); }
        }

        /* ===== 数据条 ===== */
        .stats-strip {
            position: relative;
            z-index: 1;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            background: rgba(10,10,18,0.6);
            backdrop-filter: blur(16px);
        }

        .stats-inner {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            padding: 0;
        }

        .stat-cell {
            text-align: center;
            padding: 48px 20px;
            position: relative;
        }

        .stat-cell:not(:last-child)::after {
            content: '';
            position: absolute;
            right: 0; top: 20%;
            height: 60%;
            width: 1px;
            background: linear-gradient(180deg, transparent, var(--border), transparent);
        }

        .stat-num {
            font-size: 56px;
            font-weight: 900;
            background: linear-gradient(135deg, var(--gold-light), var(--gold));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.1;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 8px;
            letter-spacing: 1px;
        }

        /* ===== Section通用 ===== */
        .section {
            position: relative;
            z-index: 1;
            padding: 140px 80px;
        }

        .section-header {
            max-width: 1400px;
            margin: 0 auto 80px;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 20px;
            border: 1px solid var(--gold-dim);
            border-radius: 100px;
            font-size: 12px;
            color: var(--gold);
            letter-spacing: 3px;
            margin-bottom: 20px;
        }

        .section-title {
            font-size: 52px;
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 16px;
            letter-spacing: -1px;
        }

        .section-desc {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 600px;
            line-height: 1.7;
        }

        /* ===== 核心工具区 ===== */
        .tools-showcase {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        .tool-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 48px 40px;
            position: relative;
            overflow: hidden;
            transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .tool-card::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0;
            height: 3px;
            background: var(--accent);
            transform: scaleX(0);
            transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            transform-origin: left;
        }

        .tool-card:hover::before { transform: scaleX(1); }

        .tool-card:hover {
            border-color: var(--accent);
            transform: translateY(-8px);
            box-shadow: 0 20px 60px rgba(0,0,0,0.5), 0 0 40px var(--glow);
        }

        .tool-icon {
            width: 72px; height: 72px;
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
            margin-bottom: 28px;
        }

        .tool-name {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 4px;
            letter-spacing: -0.5px;
        }

        .tool-type {
            font-size: 13px;
            color: var(--text-dim);
            letter-spacing: 2px;
            margin-bottom: 20px;
            text-transform: uppercase;
        }

        .tool-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 28px;
        }

        .tool-features {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .tool-features li {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 15px;
            color: var(--text-secondary);
        }

        .feat-dot {
            width: 22px; height: 22px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            flex-shrink: 0;
        }

        /* 满血标签 */
        .blood-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: linear-gradient(135deg, rgba(239,68,68,0.12), rgba(249,115,22,0.12));
            border: 1px solid rgba(239,68,68,0.25);
            border-radius: 8px;
            font-size: 13px;
            font-weight: 700;
            color: var(--orange);
            letter-spacing: 1px;
            margin-bottom: 16px;
            animation: blood-glow 2s ease-in-out infinite;
        }

        @keyframes blood-glow {
            0%, 100% { box-shadow: 0 0 0 0 rgba(249,115,22,0); }
            50% { box-shadow: 0 0 12px 2px rgba(249,115,22,0.15); }
        }

        /* ===== 自研工具区 ===== */
        .custom-grid {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        .custom-card {
            background: var(--bg-card2);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 44px 36px;
            position: relative;
            overflow: hidden;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== 边框金色发光层（红框区域，hover时亮起）===== */
        .custom-card .border-glow {
            position: absolute;
            inset: -4px;
            border-radius: 24px;
            padding: 3px;
            background: linear-gradient(135deg,
                rgba(255,240,160,0.9) 0%,
                rgba(255,215,60,0.65) 30%,
                rgba(201,162,60,0.4) 60%,
                rgba(255,240,160,0.8) 100%);
            -webkit-mask:
                linear-gradient(#000 0 0) content-box,
                linear-gradient(#000 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            opacity: 0;
            transition: opacity 0.35s ease;
            pointer-events: none;
            z-index: 2;
            filter: drop-shadow(0 0 12px rgba(255,225,100,0.8))
                    drop-shadow(0 0 35px rgba(255,200,50,0.45))
                    drop-shadow(0 0 60px rgba(201,162,60,0.2));
        }
        .custom-card:hover .border-glow { opacity: 1; }

        /* ===== 外层扩散光晕（整卡周围金色氛围）===== */
        .custom-card .aura-glow {
            position: absolute;
            inset: -60px;
            border-radius: 60px;
            background: radial-gradient(ellipse at center,
                rgba(255,235,120,0.22) 0%,
                rgba(255,215,60,0.13) 25%,
                rgba(201,162,60,0.07) 50%,
                rgba(201,162,60,0.03) 70%,
                transparent 88%);
            opacity: 0;
            transition: opacity 0.5s ease;
            pointer-events: none;
            z-index: -2;
            filter: blur(35px);
        }
        .custom-card:hover .aura-glow { opacity: 1; }

        .custom-card:hover {
            transform: translateY(-28px) scale(1.05);
            border-color: rgba(255,225,100,0.55);
            box-shadow:
                0 40px 100px rgba(0,0,0,0.6),
                0 0 50px rgba(255,215,60,0.22),
                0 0 100px rgba(201,162,60,0.1),
                0 0 160px rgba(201,162,60,0.04);
        }

        .custom-tag {
            position: absolute;
            top: 20px; right: 20px;
            padding: 4px 14px;
            border-radius: 8px;
            font-size: 11px;
            font-weight: 700;
            background: rgba(201,162,60,0.1);
            color: var(--gold);
            border: 1px solid rgba(201,162,60,0.2);
            letter-spacing: 2px;
        }

        .custom-icon {
            font-size: 40px;
            margin-bottom: 24px;
        }

        .custom-name {
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .custom-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .custom-flow {
            background: rgba(255,255,255,0.02);
            border: 1px solid rgba(255,255,255,0.04);
            border-radius: 14px;
            padding: 20px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-dim);
        }

        .custom-flow .flow-label {
            font-size: 11px;
            color: var(--gold-dim);
            letter-spacing: 2px;
            margin-bottom: 10px;
            text-transform: uppercase;
        }

        .custom-flow .hl {
            color: var(--gold-light);
            font-weight: 500;
        }

        /* ===== 工作流区 ===== */
        .flow-track {
            max-width: 1200px;
            margin: 0 auto;
        }

        .flow-steps {
            display: flex;
            align-items: flex-start;
        }

        .flow-step {
            flex: 1;
            text-align: center;
            position: relative;
            padding: 0 20px;
        }

        .flow-step-dot {
            width: 64px; height: 64px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 800;
            margin: 0 auto 20px;
            position: relative;
            z-index: 2;
        }

        .flow-step:not(:last-child) .flow-step-dot::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 100%;
            width: calc(100% + 40px);
            height: 2px;
            background: linear-gradient(90deg, var(--border), rgba(201,162,60,0.2), var(--border));
        }

        .flow-step-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .flow-step-sub {
            font-size: 13px;
            color: var(--text-dim);
            margin-bottom: 8px;
        }

        .flow-step-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(201,162,60,0.08);
            color: var(--gold);
        }

        .flow-pipeline {
            max-width: 900px;
            margin: 60px auto 0;
            text-align: center;
            padding: 24px 40px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
        }

        .flow-pipeline .pipe-label {
            font-size: 13px;
            color: var(--text-dim);
        }

        .flow-pipeline .pipe-tool {
            font-size: 14px;
            font-weight: 600;
            color: var(--gold);
        }

        .flow-pipeline .pipe-plus {
            color: var(--text-dim);
            font-size: 16px;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 160px 80px;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            bottom: 0; left: 0; right: 0;
            height: 60%;
            background: radial-gradient(ellipse at 50% 100%, rgba(201,162,60,0.05) 0%, transparent 60%);
        }

        .cta-title {
            font-size: 48px;
            font-weight: 900;
            margin-bottom: 20px;
            position: relative;
        }

        .cta-desc {
            font-size: 18px;
            color: var(--text-secondary);
            margin-bottom: 48px;
            position: relative;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            padding: 20px 64px;
            background: linear-gradient(135deg, var(--gold-light), var(--gold), var(--gold-dim));
            color: var(--bg-deep);
            font-size: 18px;
            font-weight: 800;
            border: none;
            border-radius: 16px;
            cursor: pointer;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            text-decoration: none;
            position: relative;
            letter-spacing: 1px;
        }

        .cta-btn:hover {
            transform: translateY(-4px) scale(1.02);
            box-shadow: 0 12px 40px rgba(201,162,60,0.35);
        }

        .cta-footer {
            margin-top: 32px;
            font-size: 14px;
            color: var(--text-dim);
            letter-spacing: 2px;
            position: relative;
        }

        /* ===== Footer ===== */
        footer {
            text-align: center;
            padding: 40px 80px;
            border-top: 1px solid var(--border);
            color: var(--text-dim);
            font-size: 13px;
            letter-spacing: 1px;
            position: relative;
            z-index: 1;
        }

        footer .brand { color: var(--gold); font-weight: 700; }

        /* ===== 动画 ===== */
        .reveal {
            opacity: 0;
            transform: translateY(40px);
            transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .reveal-delay-1 { transition-delay: 0.1s; }
        .reveal-delay-2 { transition-delay: 0.2s; }
        .reveal-delay-3 { transition-delay: 0.3s; }
        .reveal-delay-4 { transition-delay: 0.4s; }
        .reveal-delay-5 { transition-delay: 0.5s; }

        /* 鼠标跟随光效 */
        .cursor-glow {
            position: fixed;
            width: 400px; height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(139,92,246,0.04) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
            transform: translate(-50%, -50%);
            transition: left 0.3s ease-out, top 0.3s ease-out;
        }

        /* ===== 课程跳转横幅 ===== */
        .course-banner {
            position: relative;
            z-index: 1;
            padding: 100px 80px;
            display: flex;
            justify-content: center;
        }

        .course-banner-inner {
            max-width: 1200px;
            width: 100%;
            position: relative;
            border-radius: 28px;
            padding: 72px 80px;
            background: linear-gradient(135deg, rgba(201,162,60,0.04), rgba(139,92,246,0.04), rgba(74,124,255,0.04));
            border: 1px solid rgba(201,162,60,0.15);
            overflow: hidden;
            transition: all 0.5s ease;
        }

        .course-banner-inner:hover {
            border-color: rgba(201,162,60,0.3);
            box-shadow: 0 0 80px rgba(201,162,60,0.08);
        }

        /* 光带动画 */
        .course-banner-inner::before {
            content: '';
            position: absolute;
            top: -2px; left: -2px; right: -2px; bottom: -2px;
            border-radius: 30px;
            background: linear-gradient(135deg, var(--gold), var(--purple), var(--blue), var(--gold));
            background-size: 400% 400%;
            z-index: -1;
            animation: border-glow 6s ease infinite;
            opacity: 0.5;
        }

        @keyframes border-glow {
            0% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }

        .course-banner-inner::after {
            content: '';
            position: absolute;
            top: 0; left: -100%;
            width: 60%; height: 100%;
            background: linear-gradient(90deg, transparent, rgba(201,162,60,0.04), transparent);
            animation: sweep 4s ease-in-out infinite;
        }

        @keyframes sweep {
            0% { left: -60%; }
            100% { left: 120%; }
        }

        .course-banner-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 60px;
            flex-wrap: wrap;
        }

        .course-banner-left { flex: 1; min-width: 300px; }

        .course-banner-left .section-tag {
            margin-bottom: 16px;
        }

        .course-banner-title {
            font-size: clamp(32px, 4vw, 52px);
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }

        .course-banner-title .gold {
            background: linear-gradient(135deg, var(--gold-light), var(--gold));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .course-banner-desc {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 500px;
        }

        .course-banner-chips {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .course-chip {
            padding: 8px 20px;
            border-radius: 100px;
            font-size: 13px;
            font-weight: 600;
            border: 1px solid;
        }

        .course-chip.gold {
            background: rgba(201,162,60,0.08);
            border-color: rgba(201,162,60,0.2);
            color: var(--gold);
        }

        .course-chip.purple {
            background: rgba(139,92,246,0.08);
            border-color: rgba(139,92,246,0.2);
            color: var(--purple-light);
        }

        .course-chip.blue {
            background: rgba(74,124,255,0.08);
            border-color: rgba(74,124,255,0.2);
            color: var(--blue-light);
        }

        .course-banner-right {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 20px;
            flex-shrink: 0;
        }

        .course-btn-main {
            display: inline-flex;
            align-items: center;
            gap: 14px;
            padding: 22px 56px;
            background: linear-gradient(135deg, var(--gold-light), var(--gold), #b8860b);
            color: var(--bg-deep);
            font-size: 20px;
            font-weight: 900;
            border: none;
            border-radius: 16px;
            cursor: pointer;
            text-decoration: none;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: 0 8px 32px rgba(201,162,60,0.25);
            letter-spacing: 1px;
            position: relative;
            overflow: hidden;
        }

        .course-btn-main::after {
            content: '';
            position: absolute;
            top: 0; left: -100%;
            width: 100%; height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            transition: left 0.6s ease;
        }

        .course-btn-main:hover::after { left: 100%; }

        .course-btn-main:hover {
            transform: translateY(-4px) scale(1.03);
            box-shadow: 0 16px 48px rgba(201,162,60,0.4);
        }

        .course-btn-sub {
            font-size: 13px;
            color: var(--text-dim);
            letter-spacing: 2px;
        }

        .course-btn-arrow {
            display: inline-block;
            transition: transform 0.3s ease;
        }

        .course-btn-main:hover .course-btn-arrow {
            transform: translateX(4px);
        }

        /* 装饰粒子 */
        .course-float {
            position: absolute;
            border-radius: 50%;
            pointer-events: none;
            animation: float-up 6s ease-in-out infinite;
        }

        .course-float-1 {
            width: 8px; height: 8px;
            background: var(--gold);
            opacity: 0.4;
            top: 20%; left: 10%;
            animation-delay: 0s;
        }

        .course-float-2 {
            width: 6px; height: 6px;
            background: var(--purple);
            opacity: 0.3;
            top: 60%; right: 15%;
            animation-delay: 2s;
        }

        .course-float-3 {
            width: 10px; height: 10px;
            background: var(--blue);
            opacity: 0.2;
            bottom: 20%; left: 30%;
            animation-delay: 4s;
        }

        @keyframes float-up {
            0%, 100% { transform: translateY(0) scale(1); opacity: 0.3; }
            50% { transform: translateY(-20px) scale(1.2); opacity: 0.6; }
        }

        /* Scrollbar */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--bg-deep); }
        ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--gold-dim); }

        /* ===== 导航用户区域 ===== */
        .nav-right-area {
            display: flex; align-items: center; gap: 16px;
        }
        .nav-user-wrap {
            display: flex; align-items: center; gap: 10px;
        }
        .nav-username {
            font-size: 13px; color: var(--gold-light);
            font-weight: 600;
        }
        .nav-logout-btn {
            font-size: 12px; color: var(--text-dim);
            background: none; border: 1px solid var(--border);
            padding: 6px 14px; border-radius: 8px;
            cursor: pointer; transition: all 0.3s;
        }
        .nav-logout-btn:hover {
            color: var(--text-secondary);
            border-color: rgba(201,162,60,0.3);
        }
        .nav-login-btn {
            font-size: 13px; color: var(--purple-light);
            background: rgba(139,92,246,0.08);
            border: 1px solid rgba(139,92,246,0.2);
            padding: 6px 18px; border-radius: 8px;
            cursor: pointer; transition: all 0.3s;
            font-weight: 600; text-decoration: none;
            display: inline-flex; align-items: center;
        }
        .nav-login-btn:hover {
            background: rgba(139,92,246,0.15);
            border-color: rgba(139,92,246,0.4);
        }
        .nav-member-badge {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 6px;
            font-size: 11px; font-weight: 700;
            letter-spacing: 1px;
        }
        .nav-member-badge.normal { background: rgba(136,136,160,0.1); color: #888; border: 1px solid rgba(136,136,160,0.2); }
        .nav-member-badge.vip { background: rgba(201,162,60,0.1); color: var(--gold); border: 1px solid rgba(201,162,60,0.2); }
        .nav-member-badge.svip { background: rgba(139,92,246,0.1); color: var(--purple-light); border: 1px solid rgba(139,92,246,0.2); }
        .nav-member-badge.honor { background: rgba(239,68,68,0.1); color: #f87171; border: 1px solid rgba(239,68,68,0.2); }
        .nav-member-badge.admin { background: rgba(240,208,96,0.1); color: var(--gold-light); border: 1px solid rgba(240,208,96,0.2); }

        /* 升级会员横幅 */
        .upgrade-banner {
            position: relative; z-index: 1;
            padding: 100px 80px;
            display: flex; justify-content: center;
        }
        .upgrade-banner-inner {
            max-width: 1200px; width: 100%;
            position: relative;
            border-radius: 28px;
            padding: 56px 64px;
            background: linear-gradient(135deg, rgba(201,162,60,0.06), rgba(240,208,96,0.03));
            border: 1px solid rgba(201,162,60,0.15);
            overflow: hidden;
            transition: all 0.5s ease;
            text-align: center;
        }
        .upgrade-banner-inner:hover {
            border-color: rgba(201,162,60,0.3);
            box-shadow: 0 0 60px rgba(201,162,60,0.08);
        }
        .upgrade-banner-inner::before {
            content: '';
            position: absolute; top: -2px; left: -2px; right: -2px; bottom: -2px;
            border-radius: 30px;
            background: linear-gradient(135deg, var(--gold), var(--purple), var(--gold));
            background-size: 400% 400%;
            z-index: -1; opacity: 0.4;
            animation: border-glow 6s ease infinite;
        }
        @keyframes border-glow {
            0% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }
        .upgrade-banner-title {
            font-size: 36px; font-weight: 900;
            margin-bottom: 16px;
        }
        .upgrade-banner-title .gold {
            background: linear-gradient(135deg, var(--gold-light), var(--gold));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .upgrade-banner-desc {
            font-size: 16px; color: var(--text-secondary);
            margin-bottom: 32px; line-height: 1.7;
        }
        .upgrade-banner-features {
            display: flex; justify-content: center; gap: 24px;
            flex-wrap: wrap; margin-bottom: 32px;
        }
        .upgrade-feature {
            display: flex; align-items: center; gap: 8px;
            padding: 8px 20px;
            background: rgba(255,255,255,0.03);
            border: 1px solid var(--border);
            border-radius: 10px;
            font-size: 14px; color: var(--text-secondary);
        }
        .upgrade-banner-btn {
            display: inline-flex; align-items: center; gap: 12px;
            padding: 18px 56px;
            background: linear-gradient(135deg, var(--gold-light), var(--gold), var(--gold-dim));
            color: var(--bg-deep);
            font-size: 18px; font-weight: 800;
            border: none; border-radius: 14px; cursor: pointer;
            transition: all 0.3s; letter-spacing: 1px;
            text-decoration: none;
        }
        .upgrade-banner-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(201,162,60,0.4);
        }

        /* ===== 手机端抽屉导航 ===== */
        .mobile-nav-drawer {
            display: none;
            position: fixed;
            top: 0; left: -100%;
            width: 280px;
            height: 100vh;
            background: rgba(8, 8, 18, 0.98);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-right: 1px solid rgba(201,162,60,0.15);
            z-index: 10000;
            flex-direction: column;
            padding: 80px 24px 40px;
            gap: 8px;
            transition: left 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            overflow-y: auto;
        }
        .mobile-nav-drawer.open {
            left: 0;
        }
        .mobile-nav-drawer a {
            display: block;
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 16px;
            font-weight: 500;
            padding: 14px 16px;
            border-radius: 12px;
            transition: all 0.2s;
            border: 1px solid transparent;
        }
        .mobile-nav-drawer a:hover,
        .mobile-nav-drawer a:active {
            color: var(--gold-light);
            background: rgba(201,162,60,0.08);
            border-color: rgba(201,162,60,0.2);
        }
        .mobile-nav-drawer .drawer-divider {
            height: 1px;
            background: rgba(255,255,255,0.06);
            margin: 8px 0;
        }
        .mobile-nav-drawer .drawer-user-info {
            padding: 16px;
            background: rgba(201,162,60,0.06);
            border-radius: 12px;
            margin-bottom: 8px;
            display: none;
        }
        .mobile-nav-drawer .drawer-user-info.visible { display: block; }
        .mobile-nav-drawer .drawer-username {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
        }
        .mobile-nav-drawer .drawer-badge {
            font-size: 11px;
            color: var(--gold);
            margin-top: 4px;
        }
        .mobile-nav-drawer .drawer-logout {
            color: #ef4444 !important;
            border-color: transparent !important;
        }
        .mobile-nav-drawer .drawer-logout:hover {
            background: rgba(239,68,68,0.08) !important;
            border-color: rgba(239,68,68,0.2) !important;
        }
        .mobile-nav-drawer .drawer-share {
            color: var(--gold) !important;
        }
        .mobile-nav-drawer .drawer-login {
            background: linear-gradient(135deg,#c9a23c,#e8cc7a) !important;
            color: #000 !important;
            font-weight: 700 !important;
            text-align: center;
        }

        /* ===== 手机端适配 ===== */
        @media (max-width: 768px) {
            /* 导航 */
            nav {
                padding: 14px 20px !important;
            }
            .nav-logo {
                font-size: 16px !important;
                /* 手机端logo左移，给汉堡按钮留位置 */
                margin-left: 52px !important;
            }
            .nav-logo span {
                display: none;
            }
            /* 手机端隐藏导航链接和右侧按钮区 */
            .nav-links {
                display: none !important;
            }
            .nav-right-area {
                display: none !important;
            }
            /* 显示抽屉菜单 */
            .mobile-nav-drawer {
                display: flex;
            }

            /* Hero */
            .hero {
                padding: 100px 20px 60px !important;
                min-height: auto !important;
            }
            .hero-inner {
                grid-template-columns: 1fr !important;
                gap: 40px !important;
            }
            .hero-title {
                font-size: 48px !important;
                letter-spacing: -1px !important;
            }
            .hero-subtitle {
                font-size: 18px !important;
            }
            .hero-chips {
                flex-wrap: wrap !important;
                gap: 10px !important;
            }
            .hero-chip {
                padding: 8px 14px !important;
                font-size: 13px !important;
            }
            .hero-slogan {
                font-size: 12px !important;
                letter-spacing: 3px !important;
            }
            .hero-visual {
                height: 360px !important;
            }
            .orbit-ring-1 { width: 300px !important; height: 300px !important; }
            .orbit-ring-2 { width: 240px !important; height: 240px !important; }
            .orbit-ring-3 { width: 160px !important; height: 160px !important; }
            .orbit-node-1 { width: 64px !important; height: 64px !important; font-size: 24px !important; border-radius: 16px !important; }
            .orbit-node { width: 40px !important; height: 40px !important; font-size: 16px !important; border-radius: 12px !important; }
            .orbit-label { font-size: 9px !important; }
            .orbit-label-2 { right: auto !important; left: calc(50% + 24px) !important; top: -20px !important; }
            .orbit-label-3 { right: -50px !important; }
            .orbit-label-4 { left: -50px !important; }
            .orbit-label-5 { right: 10px !important; }

            /* 数据条 */
            .stats-strip { padding: 0 !important; }
            .stats-inner {
                grid-template-columns: 1fr 1fr !important;
                gap: 0 !important;
            }
            .stat-cell {
                padding: 28px 10px !important;
            }
            .stat-cell:nth-child(2)::after { display: none; }
            .stat-num { font-size: 36px !important; }
            .stat-label { font-size: 12px !important; }

            /* Section通用 */
            .section {
                padding: 80px 20px !important;
            }
            .section-header {
                margin-bottom: 48px !important;
            }
            .section-title {
                font-size: 32px !important;
            }
            .section-desc {
                font-size: 15px !important;
            }

            /* 核心工具卡片 */
            .tools-showcase {
                grid-template-columns: 1fr !important;
                gap: 20px !important;
            }
            .tool-card {
                padding: 32px 24px !important;
            }
            .tool-name { font-size: 22px !important; }
            .tool-desc { font-size: 14px !important; }
            .tool-features li { font-size: 13px !important; }

            /* 自研工具 */
            .custom-grid {
                grid-template-columns: 1fr !important;
                gap: 20px !important;
            }
            .custom-card {
                padding: 32px 24px !important;
            }

            /* 创作流程 */
            .flow-steps {
                flex-direction: column !important;
                gap: 32px !important;
            }
            .flow-step {
                padding: 0 !important;
            }
            .flow-step:not(:last-child) .flow-step-dot::after {
                width: 2px !important;
                height: calc(100% + 20px) !important;
                top: 100% !important;
                left: 50% !important;
                background: var(--border) !important;
            }
            .flow-pipeline {
                flex-wrap: wrap !important;
                gap: 12px !important;
                padding: 16px 20px !important;
            }

            /* 课程跳转横幅 */
            .course-banner {
                padding: 60px 16px !important;
            }
            .course-banner-inner {
                padding: 48px 24px !important;
                border-radius: 20px !important;
            }
            .course-banner-content {
                flex-direction: column !important;
                gap: 36px !important;
                text-align: center;
            }
            .course-banner-left {
                min-width: auto !important;
            }
            .course-banner-desc {
                max-width: 100% !important;
                font-size: 15px !important;
            }
            .course-banner-chips {
                justify-content: center;
            }
            .course-btn-main {
                padding: 18px 40px !important;
                font-size: 17px !important;
            }
            .course-btn-sub {
                font-size: 11px !important;
            }

            /* CTA */
            .cta-section {
                padding: 100px 20px !important;
            }
            .cta-title { font-size: 32px !important; }
            .cta-desc { font-size: 15px !important; }
            .cta-btn { padding: 16px 40px !important; font-size: 16px !important; }

            /* Footer */
            footer { padding: 32px 20px !important; font-size: 11px !important; }

            /* 导航用户区 */
            .nav-right-area { gap: 8px !important; }
            .nav-user-wrap { gap: 6px !important; }
            .nav-username { font-size: 12px !important; }
            .nav-logout-btn { padding: 4px 10px !important; font-size: 11px !important; }
            .nav-login-btn { padding: 4px 12px !important; font-size: 12px !important; }
            .nav-member-badge { font-size: 10px !important; padding: 2px 8px !important; }

            /* 升级横幅 */
            .upgrade-banner { padding: 60px 16px !important; }
            .upgrade-banner-inner { padding: 36px 20px !important; border-radius: 20px !important; }
            .upgrade-banner-title { font-size: 24px !important; }
            .upgrade-banner-desc { font-size: 14px !important; }
            .upgrade-banner-features { gap: 12px !important; }
            .upgrade-feature { font-size: 12px !important; padding: 6px 12px !important; }
            .upgrade-banner-btn { padding: 14px 36px !important; font-size: 15px !important; }
        }
    
/* 神红色火焰文字效果 - Seedance满血尊享版 */
.fire-text {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 12px;
    background: linear-gradient(135deg, #ff1500, #ff6a00, #ff1500, #ffea00, #ff1500) !important;
    background-size: 300% 300% !important;
    -webkit-background-clip: text !important;
    background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    animation: fireGradient 2s ease infinite, fireShake 0.3s ease-in-out infinite !important;
    text-shadow: 0 0 20px rgba(255,100,0,0.3) !important;
    position: relative;
}

.fire-text::before {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    background: linear-gradient(135deg, #ff0000, #ff6600, #ffcc00) !important;
    -webkit-background-clip: text !important;
    background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    animation: fireShake 0.2s ease-in-out infinite !important;
    z-index: -1;
    filter: blur(8px);
    opacity: 0.6;
}

.fire-text::after {
    content: '🔥';
    position: absolute;
    top: -8px;
    right: -24px;
    font-size: 14px;
    animation: fireParticle 0.8s ease-in-out infinite;
    -webkit-text-fill-color: unset;
}

@keyframes fireGradient {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@keyframes fireShake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-1px) translateY(-1px); }
    75% { transform: translateX(1px) translateY(1px); }
}

@keyframes fireParticle {
    0%, 100% { transform: translateY(0) scale(1); opacity: 1; }
    50% { transform: translateY(-4px) scale(1.2); opacity: 0.7; }
}

/* 神红色火焰文字效果 */
.custom-flow .hl.fire-red {
    color: #ff1500 !important;
    text-shadow: 
        0 0 8px #ff4400,
        0 0 16px #ff2200,
        0 0 24px #ff0000 !important;
    animation: fireShake 0.3s ease-in-out infinite, firePulse 1s ease-in-out infinite alternate !important;
    font-weight: 700 !important;
    position: relative;
    display: inline-block;
}

.custom-flow .hl.fire-red::after {
    content: '🔥';
    font-size: 12px;
    position: absolute;
    top: -4px;
    right: -16px;
    animation: fireParticle 0.8s ease-in-out infinite !important;
}

@keyframes fireShake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-1px); }
    75% { transform: translateX(1px); }
}

@keyframes firePulse {
    0% { text-shadow: 0 0 8px #ff4400, 0 0 16px #ff2200, 0 0 24px #ff0000; }
    100% { text-shadow: 0 0 12px #ff8800, 0 0 24px #ff4400, 0 0 36px #ff2200; }
}

@keyframes fireParticle {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-3px) scale(1.2); }
}