/* 基础变量体系 - 继承首页视觉契约 */
:root {
    --color-primary: #6a3be2;
    --color-primary-dark: #4d26b0;
    --color-primary-light: #ece5fe;
    --color-bg-dark: #0f1016;
    --color-bg-light: #f8f9fc;
    --color-surface: #ffffff;
    --color-ink-main: #1d1d1f;
    --color-ink-sub: #6e6e73;
    --color-ink-inverse: #ffffff;
    --color-ink-inverse-sub: rgba(255, 255, 255, 0.7);
    --radius-lg: 22px;
    --radius-md: 16px;
    --radius-sm: 8px;
    --shadow-soft: 0 8px 32px rgba(0, 0, 0, 0.04);
    --shadow-hover: 0 16px 48px rgba(106, 59, 226, 0.12);
    --transition: all 0.35s ease;
    --font-base: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --layout-max: 1200px;
}

/* 全局重置与排版基底 */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
body {
    font-family: var(--font-base);
    color: var(--color-ink-main);
    background-color: var(--color-bg-light);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
a {
    text-decoration: none;
    color: inherit;
}

/* 强制：文本换行与基础响应 */
.prose, .crest, .bullet {
    word-break: break-word;
    overflow-wrap: break-word;
    word-break: keep-all; /* 中文优化 */
}

/* 结构壳层 */
.sheaf {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    flex-wrap: wrap;
    min-width: 0;
}

/* 顶栏与导航 (复用强制HTML样式) */
.crown {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    display: flex;
    flex-wrap: wrap;
    min-width: 0;
}
.ribbon {
    width: 100%;
    max-width: var(--layout-max);
    margin: 0 auto;
    padding: 0 1.5rem;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    min-width: 0;
}
.stamp {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    min-width: 0;
}
.stamp img {
    height: 32px;
    width: auto;
    display: block;
}
.index {
    display: flex;
    gap: 2rem;
    align-items: center;
    flex-wrap: wrap;
    min-width: 0;
}
.xref {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-ink-sub);
    transition: var(--transition);
    position: relative;
}
.xref:hover {
    color: var(--color-primary);
}
.xref.active {
    color: var(--color-primary);
    font-weight: 600;
}
.xref.active::after {
    content: '';
    position: absolute;
    bottom: -24px;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--color-primary);
    border-radius: 3px 3px 0 0;
}

@media (max-width: 768px) {
    .index {
        display: none; /* 移动端简易处理，聚焦主体设计 */
    }
}

/* 主内容容器 */
.ledger {
    flex: 1;
    display: flex;
    flex-direction: column;
    width: 100%;
    min-width: 0;
}

/* ---- 顶层块 1: Hero (Article) ---- */
.stage-intro {
    background: linear-gradient(135deg, #f0ebff 0%, #e6f7fa 100%);
    position: relative;
    overflow: hidden;
    padding: 6rem 1.5rem 4rem;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    min-width: 0;
}
.binder-intro {
    max-width: var(--layout-max);
    width: 100%;
    display: flex;
    align-items: center;
    gap: 4rem;
    flex-wrap: wrap;
    min-width: 0;
}
.shell-intro-prose {
    flex: 1;
    min-width: 300px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    flex-wrap: wrap;
}
.crest-stage {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    font-weight: 800;
    line-height: 1.2;
    color: var(--color-ink-main);
    letter-spacing: -0.02em;
    white-space: normal;
}
.crest-stage span {
    background: linear-gradient(90deg, var(--color-primary) 0%, #00d2ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.prose-stage {
    font-size: 1.25rem;
    color: var(--color-ink-sub);
    line-height: 1.7;
    max-width: 500px;
}
.batch-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    flex-wrap: wrap;
    min-width: 0;
}
.macro-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    border-radius: 100px;
    font-weight: 600;
    font-size: 1.125rem;
    background: var(--color-primary);
    color: var(--color-ink-inverse);
    border: none;
    transition: var(--transition);
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(106, 59, 226, 0.3);
}
.macro-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(106, 59, 226, 0.4);
}
.macro-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    border-radius: 100px;
    font-weight: 600;
    font-size: 1.125rem;
    background: rgba(255, 255, 255, 0.8);
    color: var(--color-primary-dark);
    border: 1px solid rgba(106, 59, 226, 0.2);
    transition: var(--transition);
    cursor: pointer;
}
.macro-secondary:hover {
    background: #ffffff;
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}
.shell-intro-plate {
    flex: 1.2;
    min-width: 320px;
    position: relative;
    display: flex;
    flex-wrap: wrap;
}
.plate-stage {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(255,255,255,0.4);
    display: block;
}

/* ---- 顶层块 2: Guide (Section) ---- */
.stage-steps {
    padding: 6rem 1.5rem;
    background-color: var(--color-bg-light);
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-wrap: wrap;
    min-width: 0;
}
.crest-binder {
    font-size: clamp(2rem, 3vw, 2.5rem);
    font-weight: 700;
    color: var(--color-ink-main);
    text-align: center;
    margin-bottom: 3.5rem;
    white-space: normal;
}
.batch-steps {
    max-width: var(--layout-max);
    width: 100%;
    display: flex;
    gap: 2rem;
    justify-content: space-between;
    flex-wrap: wrap;
    min-width: 0;
}
.slide-step {
    flex: 1;
    min-width: 280px;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 2.5rem 2rem;
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(0,0,0,0.02);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    position: relative;
    flex-wrap: wrap;
}
.slide-step:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}
.glyph-step {
    width: 64px;
    height: 64px;
    background: var(--color-primary-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--color-primary);
    flex-wrap: wrap;
    min-width: 0;
}
.crest-step {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--color-ink-main);
    white-space: normal;
}
.prose-step {
    color: var(--color-ink-sub);
    font-size: 1rem;
    line-height: 1.6;
}
/* 步骤间的连接装饰 (桌面端) */
@media (min-width: 992px) {
    .slide-step:not(:last-child)::after {
        content: '→';
        position: absolute;
        right: -1.5rem;
        top: 50%;
        transform: translateY(-50%);
        font-size: 2rem;
        color: rgba(106, 59, 226, 0.2);
        font-weight: 300;
    }
}

/* ---- 顶层块 3: Grid (Aside) ---- */
.stage-capability {
    padding: 6rem 1.5rem;
    background: #ffffff;
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-wrap: wrap;
    min-width: 0;
}
.batch-grid {
    max-width: var(--layout-max);
    width: 100%;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}
.cell-cap {
    background: var(--color-bg-light);
    border-radius: var(--radius-lg);
    padding: 3rem 2.5rem;
    transition: var(--transition);
    border: 1px solid transparent;
    display: flex;
    flex-direction: column;
    flex-wrap: wrap;
    min-width: 0;
}
.cell-cap:hover {
    background: var(--color-surface);
    border-color: rgba(106, 59, 226, 0.1);
    box-shadow: var(--shadow-soft);
}
.glyph-cap {
    margin-bottom: 2rem;
    display: flex;
    flex-wrap: wrap;
    min-width: 0;
}
.crest-cap {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--color-ink-main);
    white-space: normal;
}
.prose-cap {
    color: var(--color-ink-sub);
    font-size: 1.05rem;
    line-height: 1.7;
}

/* ---- 页脚 ---- */
.base {
    background: var(--color-bg-dark);
    color: var(--color-ink-inverse);
    padding: 4rem 1.5rem;
    margin-top: auto;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    min-width: 0;
}
.binder-base {
    max-width: var(--layout-max);
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
    min-width: 0;
}
.crest-base {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: 2px;
    color: var(--color-ink-inverse);
    white-space: normal;
}
.batch-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
    min-width: 0;
}
.xref-base {
    color: var(--color-ink-inverse-sub);
    transition: var(--transition);
    font-size: 0.95rem;
}
.xref-base:hover {
    color: var(--color-ink-inverse);
}
.prose-prose {
    color: rgba(255,255,255,0.4);
    font-size: 0.85rem;
    text-align: center;
    margin-top: 2rem;
}

/* 响应式调整 */
@media (max-width: 1024px) {
    .binder-intro {
        flex-direction: column;
        text-align: center;
        gap: 3rem;
    }
    .batch-actions {
        justify-content: center;
    }
    .prose-stage {
        margin: 0 auto;
    }
}
@media (max-width: 768px) {
    .stage-intro, .stage-steps, .stage-capability {
        padding: 4rem 1.25rem;
    }
    .batch-steps {
        flex-direction: column;
    }
}

.ribbon-crown .ribbon-binder{
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 2rem;
            width: 100%;
            display: flex;
            flex-wrap: wrap;
            min-width: 0;
        }

.ribbon-crown{
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 100;
            background: rgba(15, 16, 22, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

.ribbon-crown .ribbon-ribbon{
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: 72px;
            min-width: 0;
        }

.ribbon-crown .ribbon-stamp{
            display: flex;
            align-items: center;
            min-width: 0;
        }

.ribbon-crown .ribbon-stamp img{
            height: 32px;
            width: auto;
            display: block;
        }

.ribbon-crown .ribbon-index{
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            min-width: 0;
        }

.ribbon-crown .ribbon-xref{
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all 0.35s ease;
            padding: 0.5rem 0;
            position: relative;
        }

.ribbon-crown .ribbon-xref:hover{
            color: #ffffff;
        }

.ribbon-crown .ribbon-xref.active{
            color: #ffffff;
        }

.ribbon-crown .ribbon-xref.active::after{
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: #6a3be2;
            border-radius: 2px;
        }

@media (max-width: 768px){.ribbon-crown .ribbon-index{
                display: none; 
            }}

.ribbon-crown {
    background: rgb(15, 16, 22);
    background-image: none;
}

.spine-base {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--color-ink-main);
}
.spine-base,
.spine-base *,
.spine-base *::before,
.spine-base *::after {
    box-sizing: border-box;
}

.spine-base nav,
.spine-base div,
.spine-base section,
.spine-base article,
.spine-base aside,
.spine-base p,
.spine-base h1,
.spine-base h2,
.spine-base h3,
.spine-base h4,
.spine-base h5,
.spine-base h6,
.spine-base a {
    margin: 0;
    padding: 0;
    font: inherit;
    color: inherit;
    letter-spacing: inherit;
    line-height: inherit;
}

.spine-base p,
.spine-base h1,
.spine-base h2,
.spine-base h3,
.spine-base h4,
.spine-base h5,
.spine-base h6 {
    text-decoration: none;
}

.spine-base img {
    display: block;
    max-width: 100%;
    height: auto;
    border: 0;
}

.spine-base {
    box-shadow: none;
    filter: none;
    text-shadow: none;
    background-image: none;
    border-top: none;
    border-left: none;
    border-right: none;
    outline: none;
}

.spine-base a,
.spine-base a:hover,
.spine-base a:focus,
.spine-base a:active {
    background: transparent;
    box-shadow: none;
    outline: none;
    text-decoration: none;
}

.spine-base .spine-binder{
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 2rem;
            width: 100%;
            display: flex;
            flex-wrap: wrap;
            min-width: 0;
        }

.spine-base .spine-xref{
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all 0.35s ease;
            padding: 0.5rem 0;
            position: relative;
        }

.spine-base .spine-xref:hover{
            color: #ffffff;
        }

.spine-base .spine-xref.active{
            color: #ffffff;
        }

.spine-base .spine-xref.active::after{
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: #6a3be2;
            border-radius: 2px;
        }

.spine-base{
            background: #0f1016;
            color: rgba(255, 255, 255, 0.7);
            padding: 8rem 0 2rem;
            margin-top: auto;
        }

.spine-base .spine-spine{
            display: flex;
            flex-wrap: wrap;
            gap: 8rem;
            justify-content: space-between;
            min-width: 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            padding-bottom: 4rem;
            margin-bottom: 2rem;
        }

.spine-base .spine-spine-col{
            flex: 1 1 200px;
            min-width: 0;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

.spine-base .spine-spine-col .spine-crest{
            color: #ffffff;
            font-size: 1.2rem;
            margin-bottom: 0.5rem;
        }

.spine-base .spine-spine-col .spine-xref{
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
        }

.spine-base .spine-spine-col .spine-xref:hover{
            color: #ece5fe;
            padding-left: 4px;
        }

.spine-base .spine-endcap{
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }