/* 文明跃迁理论体系 - 统一样式表 */
/* 深色研究平台气质，克制不产品化 */

:root {
    /* 基础背景色 */
    --bg: #0B1220;
    --bg-2: #111A2B;
    --card: #162338;

    /* 文字排版系统 */
    --text: #E8EDF5;
    --text-2: #B7C2D3;
    --text-3: #8C98AA;
    --accent: #C8A96B;

    /* 边框系统 */
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.16);

    /* 功能标签专属色 */
    --risk: #C96A6A;
    --opp: #6FAE8B;
    --leap: #6E8FD8;
    --eternity: #8E7BC7;

    /* 布局变量 */
    --max: 1200px;
    --radius: 16px;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);

    /* 字体 */
    --font-cn: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-cn);
    background: linear-gradient(180deg, var(--bg), #0d1526 35%, var(--bg-2));
    color: var(--text);
    line-height: 1.75;
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}

a:hover {
    color: var(--accent);
}

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

/* 容器 */
.container {
    width: min(var(--max), calc(100% - 32px));
    margin: 0 auto;
}

/* ==================== 导航 ==================== */
.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(12px);
    background: rgb(11, 18, 32, 0.85);
    border-bottom: 1px solid var(--border-soft);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    min-height: 68px;
}

.brand {
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--text);
    white-space: nowrap;
}

.nav-links {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.nav-links a {
    color: var(--text-2);
    font-size: 14px;
    transition: color .2s ease;
    white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text);
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--text);
    transition: .2s ease;
}

/* ==================== Hero/Page Intro ==================== */
.hero {
    padding: 72px 0 48px;
    border-bottom: 1px solid var(--border-soft);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 32px;
    align-items: center;
}

.hero-content {
    max-width: 760px;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-3);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.02);
    margin-bottom: 18px;
}

h1 {
    margin: 0 0 16px;
    font-size: clamp(34px, 5vw, 54px);
    line-height: 1.16;
    letter-spacing: -0.02em;
    font-weight: 600;
}

.hero h2 {
    margin: 0 0 18px;
    font-size: clamp(18px, 2.4vw, 24px);
    color: var(--text-2);
    font-weight: 600;
}

.lead {
    margin: 0;
    color: var(--text-2);
    font-size: 16px;
    max-width: 760px;
}

/* Hero结构图 */
.hero-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.015));
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
}

.hero-card h3 {
    margin: 0 0 18px;
    font-size: 18px;
    color: var(--text);
}

.flow {
    display: grid;
    gap: 12px;
}

.flow-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}

.flow-node {
    padding: 10px 12px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    color: var(--text-2);
    font-size: 14px;
    white-space: nowrap;
}

.flow-node.center {
    border-color: rgba(110, 143, 216, 0.45);
    color: var(--text);
    background: rgba(110, 143, 216, 0.1);
}

.arrow {
    color: var(--text-3);
    font-size: 13px;
}

/* 动作按钮区 */
.actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 28px;
}

/* ==================== 按钮 ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 16px;
    border-radius: 12px;
    border: 1px solid var(--border);
    color: var(--text);
    background: rgba(255, 255, 255, 0.03);
    transition: transform .18s ease, border-color .18s ease, background .18s ease;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.16);
    color: var(--text);
}

.btn.primary {
    background: var(--accent);
    color: #161616;
    border-color: rgba(0, 0, 0, 0.08);
}

.btn.primary:hover {
    background: var(--accent-hover);
}

/* ==================== 区块 ==================== */
section {
    padding: 72px 0;
    border-bottom: 1px solid var(--border-solid);
}

.section-head {
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: 24px;
    margin-bottom: 28px;
}

.section-head h2 {
    margin: 0 0 10px;
    font-size: clamp(28px, 3vw, 36px);
    line-height: 1.2;
}

.section-head p {
    margin: 0;
    color: var(--text-2);
    max-width: 760px;
}

/* ==================== 卡片 ==================== */
.card,
.doc-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.015));
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 22px;
    transition: transform .18s ease, border-color .18s ease;
}

.card:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.16);
}

.card h3 {
    margin: 0 0 10px;
    font-size: 21px;
    line-height: 1.3;
}

.card p {
    margin: 0 0 16px;
    color: var(--text-2);
    font-size: 15px;
}

.card .links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 14px;
}

.card.center-card {
    border-color: rgba(110, 143, 216, 0.3);
    background: linear-gradient(180deg, rgba(110, 143, 216, 0.10), rgba(255, 255, 255, 0.02));
}

/* ==================== 标签 ==================== */
.tag {
    display: inline-flex;
    align-items: center;
    min-height: 26px;
    padding: 0 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.01em;
    margin-bottom: 12px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--text-2);
    background: rgba(255, 255, 255, 0.04);
}

.tag.risk {
    background: var(--risk);
    color: var(--risk-text);
}

.tag.opp {
    background: var(--opp);
    color: var(--opp-text);
}

.tag.leap {
    background: var(--leap);
    color: var(--leap-text);
}

.tag.eternity {
    background: var(--eternity);
    color: var(--eternity-text);
}

/* ==================== 网格 ==================== */
.grid {
    display: grid;
    gap: 18px;
}

.grid.three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid.two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

/* ==================== 时间线 ==================== */
.timeline {
    position: relative;
    padding-left: 30px;
    margin: 2rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 6px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent), var(--border));
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
    padding-left: 20px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: -24px;
    top: 4px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent);
    border: 2px solid var(--bg);
}

.timeline-content h3 {
    margin: 0 0 0.5rem;
    font-size: 18px;
    color: var(--text);
}

.timeline-content p {
    margin: 0;
    color: var(--text-2);
    font-size: 15px;
}

/* ==================== 目标卡片 ==================== */
.goal-card {
    text-align: center;
    padding: 2rem;
}

.goal-icon {
    font-size: 32px;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 1rem;
    opacity: 0.6;
}

.goal-card h3 {
    margin: 0 0 1rem;
    font-size: 22px;
}

.goal-card p {
    margin: 0;
    color: var(--text-2);
    font-size: 15px;
}

/* ==================== 文档卡片 ==================== */
.doc-card {
    padding: 20px;
}

.doc-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.16);
}

.doc-card h4 {
    margin: 0 0 10px;
    font-size: 18px;
}

.doc-card p {
    margin: 0;
    color: var(--text-2);
    font-size: 15px;
}

/* ==================== 折叠面板 ==================== */
details {
    border: 1px solid rgba(142, 123, 199, 0.22);
    border-radius: var(--radius);
    background: rgba(142, 123, 199, 0.06);
    overflow: hidden;
}

summary {
    list-style: none;
    cursor: pointer;
    padding: 20px 22px;
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
}

summary::-webkit-details-marker {
    display: none;
}

.details-body {
    padding: 0 22px 22px;
    color: var(--text-2);
}

/* ==================== 搜索和筛选 ==================== */
.search-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
}

.search-wrap input {
    flex: 1 1 320px;
    min-height: 46px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.03);
    color: var(--text);
    padding: 0 14px;
    outline: none;
    font-size: 15px;
}

.search-wrap input:focus {
    border-color: rgba(200, 169, 107, 0.45);
    box-shadow: 0 0 0 3px rgba(200, 169, 107, 0.08);
}

.search-wrap input::placeholder {
    color: var(--text-3);
}

.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 18px;
}

.filter-btn {
    min-height: 34px;
    padding: 0 12px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-2);
    cursor: pointer;
    font-size: 14px;
    transition: .2s ease;
}

.filter-btn:hover {
    border-color: rgba(255, 255, 255, 0.16);
}

.filter-btn.active {
    color: var(--text);
    border-color: rgba(200, 169, 107, 0.35);
    background: rgba(200, 169, 107, 0.08);
}

/* ==================== 关于页面 ==================== */
.about-section {
    margin-bottom: 3rem;
}

.about-section h3 {
    margin-bottom: 1rem;
    font-size: 20px;
}

.contact-list {
    list-style: none;
}

.contact-list li {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 0;
    color: var(--text-2);
    border-bottom: 1px solid var(--border-soft);
}

.contact-list .label {
    color: var(--text-3);
    min-width: 100px;
}

/* ==================== 页脚 ==================== */
.footer {
    padding: 36px 0 56px;
    background: rgba(0, 0, 0, 0.15);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr;
    gap: 20px;
}

.footer h4 {
    margin: 0 0 12px;
    font-size: 15px;
}

.footer p, .footer li, .footer a {
    color: var(--text-3);
    font-size: 14px;
    margin: 0;
}

.footer ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 8px;
}

/* ==================== 响应式 ==================== */
@media (max-width: 980px) {
    .hero-grid,
    .grid,
    .grid.two,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .section-head {
        align-items: start;
        flex-direction: column;
    }

    .nav-links {
        gap: 10px 14px;
    }

    /* 移动端菜单 */
    .menu-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 68px;
        left: 0;
        right: 0;
        background: var(--bg-sec);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
        border-bottom: 1px solid var(--border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: .3s ease;
        z-index: 49;
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
}

@media (max-width: 768px) {
    .grid.three {
        grid-template-columns: 1fr;
    }

    .docs-grid {
        grid-template-columns: 1fr;
    }

    .leap-trilogy {
        grid-template-columns: 1fr;
    }

    .framework-item {
        min-width: 140px;
        padding: 12px 20px;
    }

    .framework-branch {
        flex-direction: column;
    }

    .framework-arrow {
        transform: rotate(90deg);
    }
}

@media (max-width: 640px) {
    .container {
        width: calc(100% - 24px);
    }

    section {
        padding: 48px 0;
    }

    .hero {
        padding: 48px 0 32px;
    }

    .actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }
}

/* ==================== 滚动条 ==================== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border-solid);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

/* ==================== 选中文字 ==================== */
::selection {
    background: var(--accent);
    color: var(--bg);
}

/* ==================== 动画 ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card, .doc-card, .timeline-item {
    animation: fadeInUp 0.5s ease forwards;
}

.card:nth-child(1) { animation-delay: 0.05s; }
.card:nth-child(2) { animation-delay: 0.1s; }
.card:nth-child(3) { animation-delay: 0.15s; }
.card:nth-child(4) { animation-delay: 0.2s; }
.card:nth-child(5) { animation-delay: 0.25s; }
.card:nth-child(6) { animation-delay: 0.3s; }

/* ==================== 语言切换预留 ==================== */
.lang-toggle {
    padding: 4px 10px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 12px;
    opacity: 0.7;
}

.lang-toggle:hover {
    opacity: 1;
    color: var(--accent) !important;
}

/* ==================== 平台声明 ==================== */
.platform-notice {
    background: rgba(200, 169, 107, 0.08);
    border: 1px solid rgba(200, 169, 107, 0.2);
    border-radius: 12px;
    padding: 16px 20px;
    margin-bottom: 28px;
    font-size: 14px;
    color: var(--text-2);
    line-height: 1.6;
}

/* ==================== 相关文档区块 ==================== */
.related-docs {
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--border-soft);
}

.related-docs h3 {
    margin-bottom: 18px;
    font-size: 18px;
}

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

/* ==================== 体系结构图 ==================== */
.framework-diagram {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
    padding: 32px 0;
}

.framework-item {
    padding: 14px 28px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    color: var(--text-2);
    font-size: 15px;
    text-align: center;
    min-width: 160px;
}

.framework-item.highlight {
    border-color: rgba(200, 169, 107, 0.4);
    color: var(--accent);
    background: rgba(200, 169, 107, 0.08);
    font-weight: 600;
}

.framework-item.half {
    min-width: 100px;
    padding: 12px 20px;
    font-size: 14px;
}

.framework-arrow {
    color: var(--text-3);
    font-size: 20px;
    padding: 6px 0;
}

.framework-branch {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
}

/* ==================== 文档网格 ==================== */
.docs-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.docs-grid .doc-card {
    display: flex;
    flex-direction: column;
}

.docs-grid .doc-card p {
    flex-grow: 1;
    margin-bottom: 16px;
}

.doc-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: auto;
}

.btn.small {
    min-height: 36px;
    padding: 0 12px;
    font-size: 13px;
    border-radius: 8px;
}

.version-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin: 10px 0;
}

.version-tag {
    padding: 4px 8px;
    border-radius: 6px;
    background: rgba(200, 169, 107, 0.1);
    border: 1px solid rgba(200, 169, 107, 0.2);
    color: var(--accent);
    font-size: 11px;
}

.highlight-card {
    border-color: rgba(200, 169, 107, 0.3);
    background: linear-gradient(180deg, rgba(200, 169, 107, 0.08), rgba(255, 255, 255, 0.02));
}

/* ==================== 三部曲卡片 ==================== */
.leap-trilogy {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.trilogy-card {
    display: flex;
    flex-direction: column;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.015));
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.trilogy-card.highlight {
    border-color: rgba(200, 169, 107, 0.3);
    background: linear-gradient(180deg, rgba(200, 169, 107, 0.08), rgba(255, 255, 255, 0.02));
}

.trilogy-number {
    padding: 16px;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border-soft);
    font-size: 14px;
    font-weight: 600;
    color: var(--accent);
    text-align: center;
}

.trilogy-card.highlight .trilogy-number {
    background: rgba(200, 169, 107, 0.1);
}

.trilogy-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.trilogy-content h3 {
    margin: 0 0 12px;
    font-size: 18px;
    color: var(--text);
}

.trilogy-content p {
    margin: 0 0 16px;
    color: var(--text-2);
    font-size: 14px;
    line-height: 1.7;
    flex-grow: 1;
}

.trilogy-versions {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 16px;
}

.trilogy-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: auto;
}

/* ==================== FAQ 样式 ==================== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 16px;
    background: rgba(255, 255, 255, 0.02);
    overflow: hidden;
}

.faq-item h2 {
    margin: 0;
    font-size: 18px;
    padding: 20px 24px;
    background: rgba(255, 255, 255, 0.02);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-item h2:hover {
    background: rgba(255, 255, 255, 0.04);
}

.faq-item h2::after {
    content: '+';
    font-size: 24px;
    color: var(--accent);
    transition: transform 0.3s ease;
}

.faq-item.open h2::after {
    transform: rotate(45deg);
}

.faq-item .faq-answer {
    padding: 0 24px 20px;
    color: var(--text-2);
    line-height: 1.8;
    display: none;
}

.faq-item.open .faq-answer {
    display: block;
}

.faq-item ul {
    margin: 12px 0 0 20px;
    padding: 0;
}

.faq-item li {
    margin-bottom: 6px;
}

.faq-source {
    text-align: center;
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--border-soft);
    color: var(--text-3);
    font-size: 14px;
}

.faq-source a {
    color: var(--accent);
}

/* ==================== 继续阅读区块 ==================== */
.continue-reading {
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--border-soft);
}

.continue-reading h3 {
    margin-bottom: 18px;
    font-size: 18px;
}

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

/* ==========================================================
   新增深化组件样式 (Visualization, Wargaming, Meta)
   ========================================================== */

/* 通用辅助类 */
.mb-1 { margin-bottom: 1rem; }
.mt-1 { margin-top: 1rem; }
.text-3 { color: var(--text-3); }
.text-accent { color: var(--accent); }

/* 贡献值文明/COS 可视化流转组件 */
.cvs-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 20px;
    border: 1px dashed rgba(111, 174, 139, 0.3);
    border-radius: var(--radius);
    background: rgba(0, 0, 0, 0.1);
}

.flow-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.flow-node {
    padding: 8px 14px;
    border-radius: 8px;
    border: 1px solid var(--border);
    color: var(--text-2);
    font-size: 13px;
    background: rgba(255, 255, 255, 0.02);
}

.flow-node.center-hub {
    border-color: var(--opp);
    color: var(--text);
    background: rgba(111, 174, 139, 0.1);
    font-weight: 500;
}

.flow-arrow {
    color: var(--opp);
    font-size: 14px;
    opacity: 0.8;
}

/* Wargaming 兵棋博弈推演组件 */
.wargame-visual {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 20px;
    border: 1px dashed rgba(201, 106, 106, 0.3);
    border-radius: var(--radius);
    background: rgba(0, 0, 0, 0.1);
}

.wargame-branch {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 10px;
    border-radius: 8px;
    border: 1px solid transparent;
}

.wargame-branch.zerosum {
    background: rgba(201, 106, 106, 0.05);
    border-color: rgba(201, 106, 106, 0.15);
}

.wargame-branch.cooperation {
    background: rgba(111, 174, 139, 0.05);
    border-color: rgba(111, 174, 139, 0.15);
}

.wargame-branch .decision {
    font-size: 13px;
    color: var(--text-2);
}

.wargame-branch .outcome {
    font-size: 14px;
    font-weight: 500;
    margin-left: 12px;
}

.wargame-branch .outcome.risk {
    color: var(--risk);
}

.wargame-branch .outcome.opp {
    color: var(--opp);
}

/* 文档元数据 */
.doc-meta {
    color: var(--text-3);
}

.doc-meta span {
    margin-right: 8px;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .cvs-flow {
        flex-direction: column;
        gap: 10px;
    }
    .flow-group {
        width: 100%;
    }
    .hero-grid {
        grid-template-columns: 1fr !important;
    }
    .hero-visual {
        display: none;
    }
}

/* 首屏视觉区域 */
.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.hero-flow {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.flow-step {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 8px;
    font-size: 13px;
    color: var(--text-2);
}

.flow-step-number {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--bg);
    font-size: 12px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
}

.flow-step.highlight {
    background: rgba(200, 169, 107, 0.1);
    border: 1px solid rgba(200, 169, 107, 0.2);
    color: var(--accent);
}

.flow-arrow-down {
    text-align: center;
    color: var(--text-3);
    font-size: 14px;
}

/* 问题/机遇并列箭头 */
.risk-opp-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 24px 0;
}

.risk-opp-arrow {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin: 16px 0;
    color: var(--accent);
    font-size: 24px;
}

/* Eternity模块降级处理 */
.eternity-reduced {
    opacity: 0.7;
}

.eternity-reduced:hover {
    opacity: 1;
}

/* 公众/内部表达对应区块 */
.expression-mapping {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin: 24px 0;
}

.expression-card {
    padding: 20px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.expression-card.public {
    border-color: rgba(200, 169, 107, 0.3);
}

.expression-card.internal {
    border-color: rgba(110, 143, 216, 0.3);
}

.expression-card h4 {
    font-size: 14px;
    color: var(--text-3);
    margin-bottom: 12px;
    font-weight: normal;
}

.expression-card p {
    font-size: 16px;
    color: var(--text);
    line-height: 1.8;
}

.expression-card.public p {
    color: var(--accent);
}

.expression-card.internal p {
    color: var(--leap);
}

/* 问题堆叠 */
.problem-stack {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

/* Wargame卡片特殊样式 */
.wargame-card {
    border-color: rgba(201, 106, 106, 0.3) !important;
}

/* Outline按钮 */
.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-2);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* 视觉卡片 */
.visualization-card {
    grid-column: span 2;
}

/* ========== 新增组件样式 ========== */

/* Hero 区域左文右图布局 */
.hero-visual {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 48px;
    align-items: center;
}

@media (max-width: 900px) {
    .hero-visual {
        grid-template-columns: 1fr;
    }
    .hero-diagram {
        order: -1;
    }
}

.hero-diagram {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* 流程示意图 */
.flow-diagram {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 24px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.flow-start, .flow-end {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 12px 20px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: calc(var(--radius) - 2px);
    text-align: center;
}

.flow-start {
    border-color: var(--accent);
}

.flow-end {
    border-color: var(--leap);
}

.flow-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
}

.flow-desc {
    font-size: 11px;
    color: var(--text-3);
}

.flow-arrow-down {
    color: var(--text-3);
    opacity: 0.5;
}

.flow-branch {
    display: flex;
    align-items: center;
    gap: 12px;
}

.flow-branch-item {
    padding: 8px 16px;
    border-radius: calc(var(--radius) - 2px);
    font-size: 13px;
    font-weight: 500;
}

.flow-branch-item.risk {
    background: rgba(201, 106, 106, 0.15);
    border: 1px solid rgba(201, 106, 106, 0.3);
    color: var(--risk);
}

.flow-branch-item.opp {
    background: rgba(111, 174, 139, 0.15);
    border: 1px solid rgba(111, 174, 139, 0.3);
    color: var(--opp);
}

.flow-vs {
    font-size: 12px;
    color: var(--text-3);
}

/* 转折点视觉箭头 */
.transition-arrows {
    display: flex;
    justify-content: center;
    margin-top: 32px;
}

.arrow-path {
    display: flex;
    align-items: center;
    gap: 24px;
}

.arrow-segment {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--accent);
}

.arrow-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-2);
}

.arrow-target {
    padding: 8px 16px;
    background: var(--card);
    border: 1px solid var(--leap);
    border-radius: calc(var(--radius) - 2px);
}

.target-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--leap);
}

/* 表达映射表 */
.expr-mapping {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.expr-row {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 24px;
    padding: 16px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.expr-public, .expr-internal {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.expr-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-3);
}

.expr-text {
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
}

.expr-public .expr-text {
    color: var(--accent);
}

.expr-arrow {
    color: var(--text-3);
    opacity: 0.5;
}

/* 版本时间线 */
.version-timeline {
    display: flex;
    flex-direction: column;
    gap: 0;
    padding-left: 24px;
    border-left: 2px solid var(--border);
}

.timeline-item {
    position: relative;
    padding: 16px 0 16px 24px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 24px;
    width: 10px;
    height: 10px;
    background: var(--bg);
    border: 2px solid var(--text-3);
    border-radius: 50%;
}

.timeline-item.current::before {
    border-color: var(--accent);
    background: var(--accent);
}

.timeline-marker {
    display: none;
}

.timeline-version {
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    margin-right: 8px;
}

.timeline-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
}

.timeline-desc {
    margin-top: 4px;
    font-size: 13px;
    color: var(--text-2);
}

.timeline-item.current {
    padding-bottom: 24px;
}

.timeline-item.current .timeline-content {
    padding: 12px 16px;
    background: rgba(200, 169, 107, 0.1);
    border: 1px solid rgba(200, 169, 107, 0.2);
    border-radius: var(--radius);
}

/* 版本徽章 */
.version-badge {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-top: 16px;
    padding: 8px 16px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 20px;
}

.version-date {
    font-size: 12px;
    color: var(--text-3);
}

/* Wargaming 决策树 */
.wargame-visual {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 24px;
    background: rgba(0, 0, 0, 0.15);
    border: 1px dashed rgba(201, 106, 106, 0.2);
    border-radius: var(--radius);
}

.wargame-trunk {
    display: flex;
    justify-content: center;
}

.wargame-node {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: rgba(201, 106, 106, 0.15);
    border: 1px solid rgba(201, 106, 106, 0.3);
    border-radius: calc(var(--radius) - 2px);
    font-size: 14px;
    font-weight: 500;
    color: var(--risk);
}

.node-icon {
    display: flex;
    align-items: center;
}

.wargame-branches {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.wargame-branch {
    padding: 16px;
    border-radius: calc(var(--radius) - 2px);
}

.wargame-branch.zerosum {
    background: rgba(201, 106, 106, 0.05);
    border: 1px solid rgba(201, 106, 106, 0.15);
}

.wargame-branch.cooperation {
    background: rgba(111, 174, 139, 0.05);
    border: 1px solid rgba(111, 174, 139, 0.15);
}

.branch-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.branch-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
}

.branch-tag {
    font-size: 10px;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 500;
}

.branch-tag.risk {
    background: rgba(201, 106, 106, 0.2);
    color: var(--risk);
}

.branch-tag.opp {
    background: rgba(111, 174, 139, 0.2);
    color: var(--opp);
}

.branch-content {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.branch-node {
    font-size: 12px;
    color: var(--text-2);
    padding-left: 8px;
    border-left: 2px solid var(--border);
}

.branch-outcome {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
    font-size: 13px;
    font-weight: 600;
}

.branch-outcome.risk {
    color: var(--risk);
}

.branch-outcome.opp {
    color: var(--opp);
}

.wargame-fork {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: calc(var(--radius) - 2px);
}

.fork-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-3);
}

.fork-nodes {
    display: flex;
    align-items: center;
    gap: 16px;
}

.fork-node {
    font-size: 12px;
    color: var(--text-2);
    padding: 4px 12px;
    background: var(--bg);
    border-radius: 12px;
}

.fork-connector {
    font-size: 14px;
    color: var(--text-3);
}

/* COS 流程可视化 */
.cvs-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 20px;
    border: 1px dashed rgba(111, 174, 139, 0.3);
    border-radius: var(--radius);
    background: rgba(0, 0, 0, 0.1);
}

.flow-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: calc(var(--radius) - 2px);
    text-align: center;
    min-width: 120px;
}

.flow-node.center-hub {
    border-color: var(--opp);
    color: var(--text);
    background: rgba(111, 174, 139, 0.1);
    font-weight: 500;
}

.flow-node.small {
    min-width: 100px;
    padding: 12px;
}

.flow-icon {
    color: var(--text-2);
}

.flow-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
}

.flow-desc {
    font-size: 11px;
    color: var(--text-3);
}

.flow-arrow {
    color: var(--text-3);
    opacity: 0.5;
    flex-shrink: 0;
}

/* ========================================
   文档库组件样式
   ======================================== */

/* 文档库快速导航 */
.doc-library-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    padding: 24px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.library-nav-item {
    padding: 10px 20px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: calc(var(--radius) - 4px);
    color: var(--text-2);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
}

.library-nav-item:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* 文档库分类区块 */
.library-category {
    margin-bottom: 48px;
}

.library-category h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    margin: 32px 0 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-soft);
}

.library-category h3:first-child {
    margin-top: 0;
}

/* 文档列表 */
.doc-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* 文档项 */
.doc-item {
    display: flex;
    gap: 20px;
    padding: 20px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: border-color 0.2s ease;
}

.doc-item:hover {
    border-color: var(--accent);
}

.doc-meta {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-shrink: 0;
    min-width: 90px;
}

.doc-lang {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 4px 10px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: calc(var(--radius) - 4px);
    font-size: 11px;
    font-weight: 600;
    color: var(--text-2);
    text-transform: uppercase;
}

.doc-lang[lang="EN"] {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
    color: #3b82f6;
}

.doc-type {
    font-size: 11px;
    color: var(--text-3);
}

.doc-content {
    flex: 1;
}

.doc-content h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}

.doc-content p {
    font-size: 14px;
    color: var(--text-2);
    line-height: 1.6;
    margin-bottom: 12px;
}

.doc-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

/* 文档说明页通用样式 */
.doc-page {
    padding: 40px 0;
}

.doc-page-header {
    text-align: center;
    padding: 48px 0;
    border-bottom: 1px solid var(--border-soft);
    margin-bottom: 48px;
}

.doc-page-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 16px;
}

.doc-page-subtitle {
    font-size: 18px;
    color: var(--text-2);
    max-width: 600px;
    margin: 0 auto;
}

.doc-page-meta {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-top: 24px;
    flex-wrap: wrap;
}

.doc-meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-3);
}

.doc-meta-item strong {
    color: var(--text-2);
}

/* 文档阅读页 */
.read-page {
    padding: 20px 0;
}

.read-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
    border-bottom: 1px solid var(--border-soft);
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 12px;
}

.read-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text);
}

.read-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.read-container {
    width: 100%;
    height: calc(100vh - 300px);
    min-height: 600px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--card);
}

.read-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* 响应式适配 */
@media (max-width: 768px) {
    .doc-item {
        flex-direction: column;
    }

    .doc-meta {
        flex-direction: row;
        min-width: auto;
    }

    .doc-library-nav {
        padding: 16px;
    }

    .library-nav-item {
        padding: 8px 16px;
        font-size: 13px;
    }

    .read-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .read-container {
        min-height: 400px;
    }
}