:root {
    --bg-color: #0d0f1a;
    --text-main: #f0f4f8;
    --text-muted: #9aa5b1;
    --accent-purple: #8752f3;
    --accent-blue: #3b82f6;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    overflow-x: hidden;
    line-height: 1.6;
}

/* -- 强调大段长文本体系 -- */
.long-text { line-height: 1.9; color: var(--text-muted); font-size: 0.98rem; letter-spacing: 0.8px; margin-bottom: 15px; }
.quote-block { border-left: 4px solid var(--accent-blue); padding: 20px 25px; background: rgba(59, 130, 246, 0.08); border-radius: 0 12px 12px 0; margin: 20px 0; font-size: 1.05rem; line-height: 1.8; color: rgba(255,255,255,0.9); }

/* 动态背景 */
.bg-effects {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    z-index: -1; pointer-events: none;
    overflow: hidden;
    background: radial-gradient(circle at 50% 50%, #1a1c2c 0%, var(--bg-color) 100%);
}

.orb {
    position: absolute; border-radius: 50%; filter: blur(100px);
    opacity: 0.5; animation: float 15s infinite ease-in-out alternate;
}
.orb-1 { width: 400px; height: 400px; background: var(--accent-purple); top: -10%; left: -10%; }
.orb-2 { width: 500px; height: 500px; background: var(--accent-blue); bottom: -20%; right: -10%; animation-delay: -5s;}
.orb-3 { width: 300px; height: 300px; background: #c026d3; top: 40%; left: 40%; opacity: 0.3; animation-delay: -10s;}

@keyframes float {
    0% { transform: translateY(0) scale(1); }
    100% { transform: translateY(50px) scale(1.1); }
}

/* Glassmorphism 面板通用样式 */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: 20px;
}

/* -- Section Headers -- */
.section-header { text-align: center; margin-bottom: 60px; }
.section-header h2 { font-size: 2.5rem; margin-bottom: 15px; background: linear-gradient(135deg, #a18cd1 0%, #fbc2eb 100%); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.section-header p { color: var(--text-muted); font-size: 1.1rem; }

/* -- 首屏 Hero Section -- */
.hero { height: 100vh; display: flex; align-items: center; justify-content: center; text-align: center; position: relative; }
.hero-content { max-width: 800px; padding: 20px; z-index: 10; animation: fadeInUp 1s ease-out; }
.hero-logo { width: 160px; height: auto; margin-bottom: 80px; filter: brightness(2.5) contrast(1.1) drop-shadow(0 0 15px rgba(255, 255, 255, 0.4)); opacity: 0.95; }
.hero .subtitle { font-size: 1.2rem; color: var(--accent-blue); text-transform: uppercase; letter-spacing: 4px; margin-bottom: 20px; }
.hero .title { font-size: 4.5rem; font-weight: 800; margin-bottom: 30px; background: linear-gradient(to right, #4facfe 0%, #00f2fe 100%); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero .desc { font-size: 1.5rem; color: var(--text-muted); font-weight: 300; }
.scroll-indicator { position: absolute; bottom: 50px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; color: var(--text-muted); animation: bounce 2s infinite; cursor: pointer; }
.down-arrow { margin-top: 10px; font-size: 1.5rem; }

@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes bounce { 0%, 20%, 50%, 80%, 100% { transform: translateY(0) translateX(-50%); } 40% { transform: translateY(-20px) translateX(-50%); } 60% { transform: translateY(-10px) translateX(-50%); } }

/* -- 认知进化时间轴 -- */
.timeline-section { padding: 100px 20px; max-width: 1000px; margin: 0 auto; position: relative; }
.timeline-container { position: relative; padding: 40px 0; }
.timeline-line { position: absolute; left: 50%; top: 0; bottom: 0; width: 4px; background: rgba(255,255,255,0.1); transform: translateX(-50%); border-radius: 2px;}
.timeline-item { width: 50%; margin-bottom: 60px; position: relative; opacity: 0; transform: translateY(50px); transition: all 0.8s ease-out; }
.timeline-item.visible { opacity: 1; transform: translateY(0); }
.timeline-item.left { left: 0; padding-right: 50px; text-align: right; }
.timeline-item.right { left: 50%; padding-left: 50px; }
.timeline-dot { position: absolute; width: 20px; height: 20px; background: var(--accent-blue); border-radius: 50%; top: 20px; box-shadow: 0 0 15px var(--accent-blue); }
.timeline-item.left .timeline-dot { right: -10px; }
.timeline-item.right .timeline-dot { left: -10px; }
.timeline-content { padding: 30px; transition: transform 0.3s ease; }
.timeline-content:hover { transform: scale(1.02); border-color: rgba(255,255,255,0.3); }
.timeline-content h3 { font-size: 1.5rem; margin-bottom: 15px; color: #fff; }
.timeline-content p { color: var(--text-muted); font-size: 1rem; }

/* -- AI 工具卡片图鉴 -- */
.tools-section { padding: 100px 20px; max-width: 1200px; margin: 0 auto; perspective: 1000px; }
.cards-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 40px; }
.tool-card-wrapper { perspective: 1000px; height: 350px; cursor: pointer; }
.tool-card { position: relative; width: 100%; height: 100%; transition: transform 0.8s; transform-style: preserve-3d; }
.tool-card-wrapper.flipped .tool-card { transform: rotateY(180deg); }
.tool-card:hover:not(.flipped) { transform: translateY(-10px) rotateX(5deg) rotateY(5deg); box-shadow: 0 15px 35px rgba(0,0,0,0.5); }
.card-front, .card-back { position: absolute; width: 100%; height: 100%; backface-visibility: hidden; display: flex; flex-direction: column; justify-content: center; align-items: center; padding: 30px; text-align: center; }
.card-front .icon { color: var(--accent-purple); margin-bottom: 20px; text-shadow: 0 0 20px rgba(135, 82, 243, 0.4); }
.card-front h3 { font-size: 1.5rem; margin-bottom: 10px; }
.card-front p { color: var(--text-muted); }
.card-back { transform: rotateY(180deg); background: rgba(135, 82, 243, 0.1); border-color: rgba(135, 82, 243, 0.3); }
.card-back h4 { color: var(--accent-blue); margin-bottom: 15px; font-size: 1.2rem; }
.card-back p { font-size: 0.95rem; line-height: 1.8; color: #fff; }

/* -- 弹幕墙 -- */
.marquee-section { padding: 80px 0; overflow: hidden; background: rgba(0,0,0,0.3); border-top: 1px solid var(--glass-border); border-bottom: 1px solid var(--glass-border); position: relative; }
.marquee-wrapper { display: flex; white-space: nowrap; }
.marquee-content { animation: marquee 30s linear infinite; display: inline-block; padding-left: 20px;}
.marquee-content:hover { animation-play-state: paused; }
.marquee-content span { font-size: 1.8rem; font-weight: 600; color: rgba(255,255,255,0.7); margin-right: 80px; text-transform: uppercase; letter-spacing: 2px;}

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

/* -- AI 模拟对话框 -- */
.chat-bot-container { position: fixed; bottom: 30px; right: 30px; z-index: 100; }
.chat-toggle-btn { background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue)); color: white; padding: 15px 25px; border-radius: 30px; cursor: pointer; display: flex; align-items: center; gap: 10px; font-weight: 600; box-shadow: 0 10px 20px rgba(0,0,0,0.3); transition: transform 0.3s; }
.chat-toggle-btn:hover { transform: scale(1.05); }

.chat-window { position: absolute; bottom: 80px; right: 0; width: 450px; height: 620px; display: flex; flex-direction: column; opacity: 0; transform: translateY(20px) scale(0.9); pointer-events: none; transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275); transform-origin: bottom right; overflow: hidden; background: rgba(15, 17, 30, 0.85); box-shadow: 0 15px 45px rgba(0,0,0,0.6); border: 1px solid rgba(255,255,255,0.15); }
.chat-window.open { opacity: 1; transform: translateY(0) scale(1); pointer-events:all; }

.chat-header { padding: 20px; background: rgba(0,0,0,0.5); border-bottom: 1px solid var(--glass-border); display: flex; justify-content: space-between; align-items: center; }
.chat-header h3 { font-size: 1.1rem; display: flex; align-items: center; gap: 10px;}
.close-btn { background: none; border: none; color: white; font-size: 1.2rem; cursor: pointer; transition: color 0.2s;}
.close-btn:hover { color: #f43f5e; }

.chat-messages { flex: 1; padding: 20px; overflow-y: auto; display: flex; flex-direction: column; gap: 15px; }
.message { max-width: 90%; padding: 15px 20px; border-radius: 12px; font-size: 1rem; line-height: 1.7; animation: popIn 0.3s ease-out forwards; letter-spacing: 0.5px; }
.message.ai { background: rgba(135, 82, 243, 0.15); border: 1px solid rgba(135, 82, 243, 0.4); align-self: flex-start; border-bottom-left-radius: 0; color: #f0f4f8; }
.message.user { background: rgba(59, 130, 246, 0.15); border: 1px solid rgba(59, 130, 246, 0.4); align-self: flex-end; border-bottom-right-radius: 0; color: #f0f4f8; }
.typing-indicator { font-style: italic; color: var(--text-muted); font-size: 0.85rem; padding: 10px; display: none;}

.chat-quick-actions { padding: 18px; border-top: 1px solid var(--glass-border); display: flex; flex-direction: column; gap: 12px; background: rgba(0,0,0,0.3); }
.action-btn { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); color: #e2e8f0; padding: 12px 15px; border-radius: 10px; cursor: pointer; transition: all 0.2s; text-align: left; font-size: 0.95rem; line-height: 1.4; display: flex; align-items: flex-start; gap: 8px;}
.action-btn::before { content: "Q:"; color: var(--accent-blue); font-weight: bold; }
.action-btn:hover { background: rgba(255,255,255,0.15); border-color: rgba(135,82,243,0.5); transform: translateX(5px); box-shadow: 0 4px 12px rgba(0,0,0,0.2); }

@keyframes popIn { 0% { opacity: 0; transform: translateY(10px) scale(0.95); } 100% { opacity: 1; transform: translateY(0) scale(1); } }

/* -- 顶层滚动进度指示条 -- */
.scroll-progress-bar {
    position: fixed;
    top: 0; left: 0; height: 3px;
    background: linear-gradient(90deg, #00f2fe, #4facfe, #8752f3);
    width: 0%; z-index: 9999;
    box-shadow: 0 0 10px rgba(0,242,254,0.5);
    transition: width 0.1s ease;
}

/* -- 左侧时光目录 ScrollSpy Nav -- */
.scrollspy-nav {
    position: fixed; top: 50%; transform: translateY(-50%);
    left: 40px; width: 220px; z-index: 100;
}
.scrollspy-nav ul { list-style: none; display: flex; flex-direction: column; gap: 15px; }
.scrollspy-nav a {
    text-decoration: none; color: var(--text-muted); font-size: 0.95rem;
    display: flex; align-items: center; gap: 12px;
    padding: 10px 15px; border-radius: 12px; transition: all 0.3s ease;
    background: rgba(255,255,255,0.02); border: 1px solid transparent;
}
.scrollspy-nav a:hover { color: var(--text-main); background: rgba(255,255,255,0.05); }
.scrollspy-nav a.active {
    color: #fff; background: rgba(135, 82, 243, 0.15);
    border: 1px solid rgba(135, 82, 243, 0.4);
    box-shadow: 0 0 15px rgba(135,82,243,0.3); transform: translateX(10px);
}
.scrollspy-nav .chapter-num { font-size: 0.8rem; opacity: 0.7; font-family: monospace; }
.scrollspy-nav .chapter-name { flex: 1; }

/* -- 右侧主内容区补偿 -- */
.content-area {
    margin-left: 280px; width: calc(100% - 280px);
    transition: margin 0.3s ease;
}
.chapter-section { scroll-margin-top: 60px; padding-top: 40px; min-height: 50vh; }

/* -- 手风琴组件 (机会墙) -- */
.opportunities-section { max-width: 900px; margin: 0 auto; padding-bottom: 80px; }
.accordion-container { display: flex; flex-direction: column; gap: 20px; }
.accordion-item { border-radius: 12px; overflow: hidden; transition: all 0.3s ease; background: rgba(255,255,255,0.02); border: 1px solid rgba(255,255,255,0.05); }
.accordion-header {
    background: rgba(255,255,255,0.03); padding: 20px 30px; cursor: pointer;
    display: flex; justify-content: space-between; align-items: center;
    border-bottom: 1px solid transparent; transition: background 0.3s ease;
}
.accordion-header h3 { font-size: 1.15rem; font-weight: 600; color: #fff; }
.accordion-header:hover { background: rgba(255,255,255,0.08); }
.accordion-header i { transition: transform 0.3s ease; color: var(--accent-blue); }
.accordion-item.open { border-color: rgba(135, 82, 243, 0.4); box-shadow: 0 10px 30px rgba(0,0,0,0.5); }
.accordion-item.open .accordion-header { background: rgba(135, 82, 243, 0.15); border-bottom: 1px solid rgba(135, 82, 243, 0.3); }
.accordion-item.open .accordion-header h3 { color: #fff; text-shadow: 0 0 10px rgba(135, 82, 243, 0.5); }
.accordion-item.open .accordion-header i { transform: rotate(180deg); color: #fff; }
.accordion-content { max-height: 0; overflow: hidden; transition: max-height 0.6s ease-in-out, padding 0.6s ease-in-out; background: rgba(0,0,0,0.4); }
.accordion-item.open .accordion-content { max-height: 1800px; padding: 30px; overflow-y: auto; }
.accordion-content p { margin-bottom: 15px; color: var(--text-main); line-height: 1.8; }
.accordion-content p:last-child { margin-bottom: 0; }
.accordion-content strong { color: var(--accent-blue); font-weight: 600; }

/* -- 瀑布流互动墙 (Q&A) -- */
.qa-section { max-width: 1000px; margin: 0 auto; padding-bottom: 80px; }
.masonry-grid { column-count: 2; column-gap: 25px; }
.masonry-item {
    break-inside: avoid; margin-bottom: 25px; padding: 25px;
    background: rgba(255,255,255,0.03); border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.05); transition: transform 0.3s, box-shadow 0.3s;
}
.masonry-item:hover {
    transform: translateY(-5px); box-shadow: 0 10px 25px rgba(0,0,0,0.4);
    border-color: rgba(59, 130, 246, 0.3); background: rgba(59, 130, 246, 0.05);
}
.qa-q { color: var(--accent-blue); font-weight: 800; font-size: 1.05rem; margin-bottom: 15px; border-bottom: 1px dashed rgba(255,255,255,0.1); padding-bottom: 10px; }
.qa-a { color: var(--text-main); font-size: 0.95rem; line-height: 1.7; }
.qa-tag { display: inline-block; padding: 4px 10px; font-size: 0.75rem; border-radius: 20px; background: rgba(135,82,243,0.2); color: #c4b5fd; margin-top: 15px; border: 1px solid rgba(135,82,243,0.3);}

/* 深耕与陪伴排版预留 */
.guide-section { max-width: 900px; margin: 0 auto; padding-bottom: 80px; }

/* -- 幕后开发实录墙 -- */
.dev-log-section { max-width: 900px; margin: 0 auto; padding-bottom: 80px; }
.chat-history-container { padding: 30px; display: flex; flex-direction: column; gap: 20px; overflow-y: auto; max-height: 800px; background: rgba(0, 0, 0, 0.3); }
.history-msg { display: flex; flex-direction: column; max-width: 85%; }
.history-user { align-self: flex-end; }
.history-ai { align-self: flex-start; }
.history-bubble { padding: 15px 20px; border-radius: 12px; font-size: 0.95rem; line-height: 1.6; }
.history-user .history-bubble { background: rgba(59, 130, 246, 0.2); border: 1px solid rgba(59, 130, 246, 0.4); border-bottom-right-radius: 0; color: #fff; }
.history-ai .history-bubble { background: rgba(135, 82, 243, 0.2); border: 1px solid rgba(135, 82, 243, 0.4); border-bottom-left-radius: 0; color: #fff; }
.history-role { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 5px; }
.history-user .history-role { text-align: right; }

/* -- 响应式设计更新 -- */
@media (max-width: 1024px) {
    .content-area { margin-left: 200px; width: calc(100% - 200px); }
    .scrollspy-nav { width: 170px; left: 20px; }
    .scrollspy-nav a { padding: 8px 10px; font-size: 0.85rem; }
}
@media (max-width: 768px) {
    .content-area { margin-left: 0; width: 100%; }
    .scrollspy-nav { display: none; }
    
    /* 标题与基础留白缩减与精修 */
    .hero-logo { width: 110px; margin-bottom: 55px; }
    .hero .title { font-size: 2.6rem; line-height: 1.2; text-shadow: 0 0 20px rgba(0, 242, 254, 0.3); }
    .hero .subtitle { font-size: 0.85rem; letter-spacing: 3px; margin-bottom: 15px; }
    .hero .desc { font-size: 1.05rem; margin-top: 15px; padding: 0 15px; opacity: 0.9; }
    .section-header { margin-bottom: 40px; }
    .section-header h2 { font-size: 1.8rem; }
    .section-header p { font-size: 0.95rem; }
    .chapter-section { scroll-margin-top: 20px; padding-top: 20px; }
    
    /* 时间轴增强呼吸感 */
    .timeline-section { padding: 40px 20px; }
    .timeline-line { left: 24px; background: rgba(255,255,255,0.15); }
    .timeline-item { width: 100%; padding-left: 55px !important; left: 0 !important; text-align: left !important; margin-bottom: 35px; }
    .timeline-dot { left: 12px !important; right: auto !important; width: 24px; height: 24px; top: 15px; border: 4px solid var(--bg-color); box-shadow: 0 0 10px var(--accent-blue); }
    .timeline-content { padding: 22px 20px; border-radius: 16px; background: rgba(255, 255, 255, 0.08); border: 1px solid rgba(255,255,255,0.1); }
    .timeline-content h3 { font-size: 1.15rem; color: #4facfe; margin-bottom: 10px; }
    
    /* 工具卡片单列锁定及比例微调 */
    .cards-container { grid-template-columns: 1fr; gap: 25px; }
    .tools-section { padding: 40px 20px; }
    .tool-card-wrapper { height: 260px; } /* 缩小压迫感 */
    
    /* 机会墙手风琴精修 */
    .opportunities-section { padding: 40px 20px; }
    .accordion-header { padding: 18px 20px; border-radius: 12px; }
    .accordion-header h3 { font-size: 1.05rem; line-height: 1.4; color: #fbc2eb;}
    .accordion-item.open .accordion-content { max-height: 2500px; padding: 25px 20px; }
    .accordion-content p { font-size: 0.95rem; margin-bottom: 12px; }
    
    /* 行动指南图文压缩 */
    .guide-section { padding: 40px 20px; }
    .guide-steps { gap: 20px; }
    .guide-steps .glass-panel { padding: 25px 20px !important; border-radius: 16px; }
    
    /* Q&A 瀑布流单列 */
    .qa-section { padding: 40px 20px; }
    .masonry-grid { column-count: 1; }
    .masonry-item { padding: 22px 20px; border-radius: 16px; margin-bottom: 20px; }
    .qa-q { font-size: 1rem; line-height: 1.4; }
    
    /* 对话记录手机压缩 */
    .dev-log-section { padding: 40px 20px; }
    .chat-history-container { padding: 15px; }
    .history-bubble { padding: 12px 15px; font-size: 0.9rem; }
    .history-msg { max-width: 95%; }
    
    /* 底部收尾 */
    .site-footer { padding: 40px 20px; margin-top: 30px; }
    .site-footer p:first-child { font-size: 1.25rem !important; }
    
    /* 伴读弹窗及按钮优化 (由长条变为FAB悬浮球) */
    .chat-bot-container { right: 20px; bottom: 40px; z-index: 10000; } /* 抬高一点避开iOS底部横条 */
    .chat-toggle-btn { 
        width: 56px; height: 56px; border-radius: 50%; padding: 0; 
        display: flex; justify-content: center; align-items: center;
        box-shadow: 0 5px 25px rgba(59, 130, 246, 0.5);
        font-size: 0; gap: 0; /* 抹去文字，仅保留图标 */
    }
    .chat-toggle-btn i { font-size: 1.5rem; margin: 0; color: white; }
    
    /* 聊天窗全屏覆盖优化 */
    .chat-window { position: fixed; top: 0; left: 0; right: 0; bottom: 0; width: 100%; height: 100%; border-radius: 0; border: none; background: rgba(10, 12, 20, 0.98); backdrop-filter: blur(20px); }
    .chat-header { padding: 20px; padding-top: max(20px, env(safe-area-inset-top)); } /* 避开刘海屏 */
    .chat-messages { padding: 20px 15px; gap: 20px; }
    .message { max-width: 92%; font-size: 0.95rem; padding: 14px 18px; line-height: 1.6; }
    .chat-quick-actions { padding: 15px; gap: 10px; max-height: 180px; }
    .action-btn { font-size: 0.9rem; padding: 10px 14px; }
}

@media (max-width: 480px) {
    .marquee-content span { font-size: 1.2rem; margin-right: 40px; }
}

/* ====== 手机端纪实卷与内容卡片专项修复 ====== */
@media (max-width: 768px) {
    /* 纪实卷 J1、J2、J3 内边距在小屏上过大 */
    .dialogue-stream-container > div[style] {
        padding: 10px 15px !important;
        gap: 20px !important;
    }
    .dialogue-stream-container .glass-panel {
        padding: 20px 16px !important;
        border-radius: 10px;
    }
    .dialogue-stream-container h3 {
        font-size: 1.15rem !important;
        margin-bottom: 12px !important;
    }
    .dialogue-stream-container h4 {
        font-size: 1rem !important;
    }
    .dialogue-stream-container p,
    .dialogue-stream-container li {
        font-size: 0.95rem !important;
        line-height: 1.75 !important;
        letter-spacing: 0.3px !important;
    }
    .dialogue-stream-container ul {
        padding-left: 18px !important;
    }
    /* 心法行动章节卡片 */
    .guide-steps .glass-panel h3 {
        font-size: 1.05rem !important;
        margin-bottom: 10px !important;
    }
    .guide-steps .glass-panel p {
        font-size: 0.95rem !important;
        line-height: 1.75 !important;
    }
    /* 底部页脚字号 */
    .site-footer p:first-child { font-size: 1.1rem !important; }
    /* 首屏标题在小屏更紧凑 */
    .hero-content { padding: 0 16px; }
    .hero .title { font-size: 2.2rem !important; }
    .hero .desc { font-size: 0.95rem !important; }
    /* 内容区域与 section 底部边距 */
    .chapter-section { padding-bottom: 40px; }
    /* 对话气泡在手机上复原内边距 */
    .history-bubble { padding: 14px 16px !important; font-size: 0.9rem !important; }
    .chat-history-container { padding: 12px !important; }
    .history-role { font-size: 0.82rem !important; }
    /* 手风琴内容指定最大展开高度，防止溢出 */
    .accordion-item.open .accordion-content { max-height: 1400px; }
}

@media (max-width: 480px) {
    /* 其他小屏进一步筝紧 */
    .dialogue-stream-container .glass-panel {
        padding: 16px 12px !important;
    }
    .hero .title { font-size: 1.9rem !important; }
    .hero-logo { width: 90px !important; }
    .section-header h2 { font-size: 1.5rem !important; }
}
/* 额外补入巨型对话流样式支持 */
.history-msg {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
}

.history-role {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.history-user .history-role { color: #facc15; }
.history-ai .history-role { color: #34d399; }

.history-bubble {
    background: rgba(30, 41, 59, 0.7) !important;
    padding: 30px 40px !important;
    border-radius: 12px;
    font-size: 1.1rem !important;
    line-height: 1.9 !important;
    letter-spacing: 0.8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-left: 4px solid #facc15 !important;
    color: #f1f5f9;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
}

.history-ai .history-bubble {
    border-left: 4px solid #34d399 !important;
}

.dialogue-stream-container {
    max-height: none !important;
    overflow-y: visible !important;
    background: transparent !important;
    padding: 20px 0 !important;
}

.dialogue-stream-container .history-msg {
    margin-bottom: 30px;
}

.dialogue-bubble {
    font-size: 1.05rem !important;
    line-height: 1.8 !important;
    color: #f1f5f9;
}

.time-stamp {
    opacity: 0.5;
    font-size: 0.8em;
    margin-left: 10px;
    font-family: monospace;
}