/* ================================================================
   Agent Skills 专题页 — 能力清单风
   强调色走靛蓝（--sk-accent），与速查页绿色 / Harness 页暖橙区分
   复用 common.css / pages.css 的主题变量与 .pg-* 组件
   ================================================================ */

/* 变量同时挂在 body.page-skills 与内容列 .sk-page 上：
   侧栏 .sidebar 是 .sk-page 的兄弟节点，只挂 .sk-page 会让侧栏部件取不到变量 */
.page-skills,
.sk-page {
    --sk-accent: #4f6bd8;
    --sk-accent-dark: #3b52ad;
    --sk-accent-soft: rgba(79, 107, 216, 0.10);
    --sk-violet: #8b5cf6;
    --sk-mono: var(--font-mono);
}

/* ---------- 头图 ---------- */
.sk-masthead {
    background:
        radial-gradient(120% 130% at 100% 0%, rgba(79, 107, 216, 0.16), transparent 55%),
        linear-gradient(135deg,
            rgba(255, 255, 255, 0.96) 0%,
            rgba(251, 252, 255, 0.86) 55%,
            rgba(243, 246, 255, 0.92) 100%);
}

.sk-masthead::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background-image: radial-gradient(rgba(79, 107, 216, 0.16) 1.2px, transparent 1.2px);
    background-size: 20px 20px;
    -webkit-mask-image: linear-gradient(115deg, transparent 46%, #000 100%);
            mask-image: linear-gradient(115deg, transparent 46%, #000 100%);
    pointer-events: none;
}

.sk-masthead .pg-masthead-inner { position: relative; z-index: 2; }

.sk-masthead .pg-overline {
    color: var(--sk-accent-dark);
    font-family: var(--sk-mono);
    letter-spacing: 0.16em;
}

.sk-masthead .pg-overline-dot {
    background: var(--sk-accent);
    box-shadow: 0 0 0 4px rgba(79, 107, 216, 0.16);
    animation: skPulse 2.6s ease-in-out infinite;
}

@keyframes skPulse {
    0%, 100% { box-shadow: 0 0 0 4px rgba(79, 107, 216, 0.16); }
    50%      { box-shadow: 0 0 0 8px rgba(79, 107, 216, 0.06); }
}

.sk-masthead .pg-title-accent { color: var(--sk-accent); }
.sk-masthead .pg-chip b { color: var(--sk-accent); }
.sk-masthead .pg-chip { border-color: rgba(79, 107, 216, 0.22); }
.sk-masthead .pg-chip:hover { border-color: rgba(79, 107, 216, 0.46); }

.sk-masthead .pg-masthead-bar {
    background: linear-gradient(90deg, var(--sk-accent-dark), var(--sk-accent) 30%, var(--sk-violet) 58%, #8ea4ee 78%, transparent);
    height: 4px;
}

/* 头图左上角的「技能编号」装饰，强化清单气质 */
.sk-masthead::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 6px;
    background: linear-gradient(180deg, var(--sk-accent), var(--sk-violet));
}

.sk-masthead .pg-masthead-glyph {
    color: rgba(79, 107, 216, 0.16);
    font-weight: 700;
}

/* 列表化的标题：左侧编号 + 竖线，更有「技能清单」手册感 */
.sk-section > .pg-section-head .pg-section-num {
    color: var(--sk-accent);
    font-weight: 700;
    letter-spacing: 0.14em;
}

/* 标题下的短渐变下划线：独立于可换成 flex 的标题，避免被当成行内项并排 */
.sk-section > .pg-section-head {
    position: relative;
    padding-bottom: var(--space-12);
    border-bottom: 1px solid rgba(79, 107, 216, 0.12);
}

.sk-section > .pg-section-head::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -1px;
    width: 64px;
    height: 3px;
    border-radius: var(--radius-2);
    background: linear-gradient(90deg, var(--sk-accent), var(--sk-violet));
}

.sk-section > .pg-section-head .pg-section-title { color: var(--text-primary); }

.sk-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-12);
    margin-top: var(--space-24);
}

.sk-hero-actions .pg-btn {
    background: linear-gradient(135deg, #5c78e2, #3b52ad);
    box-shadow: 0 5px 16px rgba(79, 107, 216, 0.32);
}

.sk-hero-actions .pg-btn:hover {
    background: linear-gradient(135deg, #4c68d6, #33489c);
    box-shadow: 0 10px 24px rgba(79, 107, 216, 0.40);
}

.sk-hero-actions .pg-btn-outline {
    background: rgba(255, 255, 255, 0.86);
    color: var(--sk-accent-dark);
    border-color: rgba(79, 107, 216, 0.34);
    box-shadow: none;
}

.sk-hero-actions .pg-btn-outline:hover {
    background: #f4f6ff;
    color: var(--sk-accent-dark);
}

/* ---------- 章节壳：顶部渐变光带 + 靛蓝描边 ---------- */
.sk-section {
    position: relative;
    margin-top: var(--space-48);
    padding: var(--space-28) var(--space-24);
    border-radius: var(--radius-12);
    border: 1px solid rgba(79, 107, 216, 0.12);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(250, 251, 255, 0.78));
    box-shadow: var(--shadow-sm);
    scroll-margin-top: calc(var(--header-height) + 20px);
    overflow: hidden;
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

/* 章节顶部一条渐隐光带，悬停时变亮 */
.sk-section::before {
    content: '';
    position: absolute;
    inset: 0 0 auto 0;
    height: 3px;
    background: linear-gradient(90deg, var(--sk-accent), var(--sk-violet) 45%, transparent 92%);
    opacity: 0.5;
    transition: opacity var(--transition-normal);
}

.sk-section:hover {
    border-color: rgba(79, 107, 216, 0.24);
    box-shadow: 0 14px 34px rgba(79, 107, 216, 0.09);
}

.sk-section:hover::before { opacity: 1; }

.sk-paragraph {
    margin-bottom: var(--space-20);
    font-size: var(--fs-14);
    line-height: 2;
    color: var(--text-secondary);
}

.sk-paragraph b { color: var(--text-primary); }

.sk-code {
    display: inline;
    padding: 1px var(--space-6);
    border-radius: var(--radius-6);
    border: 1px solid rgba(79, 107, 216, 0.16);
    background: rgba(79, 107, 216, 0.09);
    font-family: var(--sk-mono);
    font-size: var(--fs-12);
    color: #33459a;
    word-break: break-all;
}

/* ---------- 机制五卡（bento 布局：特征卡跨两列，2 行铺满无落单） ---------- */
.sk-intro-bento {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-16);
}

.sk-intro-card {
    position: relative;
    overflow: hidden;
    padding: var(--space-24) var(--space-20);
    border-radius: var(--radius-8);
    border: 1px solid rgba(79, 107, 216, 0.14);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(250, 251, 255, 0.86));
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.sk-intro-card--feature { grid-column: span 2; }

.sk-intro-card:hover {
    transform: translateY(-5px);
    border-color: rgba(79, 107, 216, 0.34);
    box-shadow: 0 18px 38px rgba(79, 107, 216, 0.16);
}

/* 卡片右上序号：低饱和描边数字，增加矩阵感 */
.sk-intro-index {
    position: absolute;
    top: var(--space-12);
    right: var(--space-16);
    font-family: var(--sk-mono);
    font-size: var(--fs-26);
    font-weight: 700;
    line-height: 1;
    color: rgba(79, 107, 216, 0.14);
    letter-spacing: 0.02em;
    transition: color var(--transition-normal), transform var(--transition-normal);
}

.sk-intro-card:hover .sk-intro-index {
    color: rgba(79, 107, 216, 0.32);
    transform: translateY(-2px);
}

/* 悬停时从卡片底部掠过的光带 */
.sk-intro-glow {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--sk-accent), var(--sk-violet), transparent);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform var(--transition-normal);
}

.sk-intro-card:hover .sk-intro-glow { transform: scaleX(1); }

.sk-intro-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px; margin-bottom: var(--space-12);
    border-radius: var(--radius-16);
    font-size: var(--fs-24);
    background: linear-gradient(150deg, rgba(79, 107, 216, 0.16), rgba(139, 92, 246, 0.05));
    border: 1px solid rgba(79, 107, 216, 0.20);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.sk-intro-card:hover .sk-intro-icon {
    transform: rotate(-4deg) scale(1.06);
    box-shadow: 0 8px 18px rgba(79, 107, 216, 0.20);
}

.sk-intro-card h3 {
    margin-bottom: var(--space-8);
    font-size: var(--fs-15);
    font-weight: 700;
    color: var(--text-primary);
}

.sk-intro-card p {
    font-size: var(--fs-13);
    line-height: var(--lh-loose);
    color: var(--text-secondary);
}

.sk-intro-card b { color: var(--text-primary); }

.sk-intro-card code.sk-code { word-break: break-all; }

/* ---------- 提示块 ---------- */
.sk-callout {
    display: flex; gap: var(--space-12);
    padding: var(--space-16) var(--space-20); margin-top: var(--space-20);
    border-radius: var(--radius-12);
    border: 1px solid rgba(79, 107, 216, 0.20);
    background: rgba(79, 107, 216, 0.055);
    font-size: var(--fs-13);
    line-height: var(--lh-loose);
    color: var(--text-secondary);
}

.sk-callout b { display: block; margin-bottom: var(--space-4); font-size: var(--fs-14); color: var(--text-primary); }
.sk-callout p { margin: 0; }
.sk-callout-icon { flex: none; font-size: var(--fs-20); line-height: var(--lh-tight); }

.sk-callout--accent {
    border-color: rgba(79, 107, 216, 0.30);
    background: linear-gradient(135deg, rgba(79, 107, 216, 0.10), rgba(255, 255, 255, 0.72));
}

.sk-callout--warn {
    border-color: rgba(217, 164, 6, 0.30);
    background: rgba(217, 164, 6, 0.07);
}

.sk-callout-link {
    display: inline-block;
    margin-top: var(--space-10);
    font-size: var(--fs-13);
    font-weight: 700;
    color: var(--sk-accent-dark);
    transition: transform var(--transition-fast), color var(--transition-fast);
}

.sk-callout-link:hover {
    color: var(--sk-accent);
    transform: translateX(3px);
}

/* ---------- superpowers 主推区 ---------- */
.sk-sp {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--space-24);
    padding: var(--space-24);
    border-radius: var(--radius-12);
    border: 1px solid rgba(139, 92, 246, 0.30);
    background:
        radial-gradient(120% 140% at 0% 0%, rgba(139, 92, 246, 0.13), transparent 55%),
        radial-gradient(120% 140% at 100% 100%, rgba(79, 107, 216, 0.12), transparent 58%),
        rgba(255, 255, 255, 0.90);
    box-shadow: 0 12px 30px rgba(139, 92, 246, 0.10);
}

.sk-sp h3 {
    margin: 12px 0 6px;
    font-family: var(--sk-mono);
    font-size: var(--fs-26);
    font-weight: 700;
    color: var(--sk-violet);
    letter-spacing: -0.01em;
}

.sk-sp-slogan { margin-bottom: var(--space-12);
    font-size: var(--fs-15);
    font-weight: 700;
    color: var(--text-primary);
}

.sk-sp-desc {
    margin-bottom: var(--space-16);
    font-size: var(--fs-13);
    line-height: 2;
    color: var(--text-secondary);
}

.sk-sp-desc b { color: var(--sk-accent-dark); }

.sk-sp-points {
    margin: 0 0 20px;
    padding-left: 0;
    list-style: none;
}

.sk-sp-points li {
    position: relative; padding-left: var(--space-20); margin-bottom: var(--space-8);
    font-size: var(--fs-13);
    line-height: var(--lh-loose);
    color: var(--text-secondary);
}

.sk-sp-points li::before {
    content: '◆';
    position: absolute;
    left: 0;
    top: 1px;
    font-size: var(--fs-11);
    color: var(--sk-violet);
}

.sk-sp-points b { color: var(--text-primary); }

.sk-sp-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-12);
}

.sk-sp-actions .pg-btn {
    background: linear-gradient(135deg, #8b5cf6, #6d3fe0);
    box-shadow: 0 5px 16px rgba(139, 92, 246, 0.30);
}

.sk-sp-actions .pg-btn:hover {
    background: linear-gradient(135deg, #7c4cf0, #5c31cc);
    box-shadow: 0 10px 24px rgba(139, 92, 246, 0.38);
}

.sk-sp-actions .pg-btn-outline {
    background: rgba(255, 255, 255, 0.88);
    color: var(--sk-accent-dark);
    border-color: rgba(79, 107, 216, 0.32);
    box-shadow: none;
}

.sk-sp-actions .pg-btn-outline:hover {
    background: #f5f7ff;
    color: var(--sk-accent-dark);
}

/* 主推区左侧正文：窄屏下与右侧清单自动堆叠 */
.sk-sp-main { min-width: 0; }

.sk-sp-side {
    padding: var(--space-20);
    border-radius: var(--radius-8);
    border: 1px solid rgba(139, 92, 246, 0.22);
    background: rgba(255, 255, 255, 0.86);
}

.sk-sp-side-title {
    margin-bottom: var(--space-12);
    font-size: var(--fs-13);
    font-weight: 700;
    color: var(--sk-violet);
    letter-spacing: 0.04em;
}

.sk-sp-side-list {
    margin: 0 0 14px;
    padding-left: 0;
    list-style: none;
}

.sk-sp-side-list li {
    padding: 8px 0;
    border-bottom: 1px dashed var(--border-light);
    font-size: var(--fs-12);
    line-height: var(--lh-base);
    color: var(--text-secondary);
}

.sk-sp-side-list li:last-child { border-bottom: none; }

.sk-sp-side-note {
    padding-top: var(--space-12);
    border-top: 1px solid var(--border-light);
    font-size: var(--fs-12);
    line-height: var(--lh-base);
    color: var(--text-muted);
}

.sk-sp-side-note b { color: var(--sk-accent-dark); }

/* ---------- 图例 ---------- */
.sk-legend {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-10) var(--space-20); margin-bottom: var(--space-16);
    padding: var(--space-12) var(--space-20);
    border-radius: var(--radius-8);
    border: 1px solid rgba(93, 151, 67, 0.12);
    background: rgba(255, 255, 255, 0.78);
}

.sk-legend-item {
    display: inline-flex;
    align-items: center; gap: var(--space-6);
    font-size: var(--fs-12);
    font-weight: 600;
    color: var(--text-secondary);
}

.sk-dot {
    width: 10px;
    height: 10px;
    border-radius: var(--radius-4);
}

.sk-dot--core { background: #4f6bd8; }
.sk-dot--safe { background: #dc2626; }
.sk-dot--opt  { background: #a3b1c2; }

/* ---------- 技能矩阵表 ---------- */
.sk-table-wrap {
    overflow-x: auto;
    border-radius: var(--radius-12);
    border: 1px solid rgba(93, 151, 67, 0.13);
    background: rgba(255, 255, 255, 0.82);
    box-shadow: var(--shadow-sm);
}

.sk-table {
    width: 100%;
    /* 四列含仓库 URL，窄容器下靠横向滚动而不是压缩换行；
       900px 是「skill 名不折 + 仓库地址可读」的经验下限 */
    min-width: 900px;
    border-collapse: collapse;
    font-size: var(--fs-13);
}

/* 仓库地址列：占满剩余宽度，链接尽量一行放下 */
.sk-table th:last-child,
.sk-table td:last-child { width: 30%; }

.sk-table th {
    padding: var(--space-12) var(--space-16);
    background: linear-gradient(180deg, rgba(79, 107, 216, 0.10), rgba(79, 107, 216, 0.035));
    border-bottom: 2px solid rgba(79, 107, 216, 0.20);
    font-size: var(--fs-12);
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--sk-accent-dark);
    text-align: left;
    white-space: nowrap;
}

.sk-table td {
    padding: var(--space-12) var(--space-16);
    border-bottom: 1px solid var(--border-light);
    color: var(--text-secondary);
    line-height: var(--lh-base);
    vertical-align: top;
}

.sk-table tbody tr { transition: background-color var(--transition-fast); }
.sk-table tbody tr:hover { background: rgba(79, 107, 216, 0.05); }
.sk-table tbody tr:last-child td { border-bottom: none; }

/* 左侧色条表示推荐等级 */
.sk-table tbody tr td:first-child {
    position: relative;
    font-weight: 600;
    color: var(--text-primary);
}

.sk-table tbody tr td:first-child::before {
    content: '';
    position: absolute;
    left: 0;
    top: var(--space-10);
    bottom: var(--space-10);
    width: 3px;
    border-radius: 0 3px 3px 0;
}

.sk-row-core td:first-child::before { background: #4f6bd8; }
.sk-row-safe td:first-child::before { background: #dc2626; }
.sk-row-opt  td:first-child::before { background: #c3ccd8; }

.sk-row-core td:first-child { padding-left: var(--space-20); }
.sk-row-safe td:first-child { padding-left: var(--space-20); }
.sk-row-opt  td:first-child { padding-left: var(--space-20); }

.sk-repo {
    display: inline-block;
    font-family: var(--sk-mono);
    font-size: var(--fs-12);
    line-height: 1.7;
    color: var(--sk-accent-dark);
    word-break: break-all;
    border-bottom: 1px dashed rgba(79, 107, 216, 0.42);
    transition: color var(--transition-fast), border-color var(--transition-fast);
}

.sk-repo:hover {
    color: var(--sk-accent);
    border-bottom-color: var(--sk-accent);
}

.sk-table-note { margin-top: var(--space-12); padding-left: var(--space-12);
    border-left: 3px solid rgba(79, 107, 216, 0.32);
    font-size: var(--fs-12);
    line-height: var(--lh-loose);
    color: var(--text-muted);
}

/* ---------- 分组详解 ---------- */
.sk-groups {
    display: flex;
    flex-direction: column;
    gap: var(--space-16);
}

.sk-group {
    border-radius: var(--radius-8);
    border: 1px solid rgba(93, 151, 67, 0.12);
    background: rgba(255, 255, 255, 0.84);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal), transform var(--transition-normal);
}

.sk-group:hover {
    transform: translateY(-3px);
    border-color: rgba(79, 107, 216, 0.30);
    box-shadow: 0 14px 30px rgba(79, 107, 216, 0.11);
}

.sk-group--safe:hover {
    border-color: rgba(220, 38, 38, 0.28);
    box-shadow: 0 14px 30px rgba(220, 38, 38, 0.10);
}

.sk-group-head {
    display: flex;
    align-items: center; gap: var(--space-12);
    padding: var(--space-16) var(--space-20);
    border-bottom: 1px solid var(--border-light);
    background: linear-gradient(120deg, rgba(79, 107, 216, 0.055), transparent 62%);
}

.sk-group--safe .sk-group-head {
    background: linear-gradient(120deg, rgba(220, 38, 38, 0.055), transparent 62%);
}

.sk-group-icon {
    flex: none;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border-radius: var(--radius-12);
    font-size: var(--fs-22);
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(79, 107, 216, 0.20);
}

.sk-group--safe .sk-group-icon { border-color: rgba(220, 38, 38, 0.22); }

.sk-group-head > div { flex: 1; min-width: 0; }

.sk-group-head h3 {
    margin-bottom: var(--space-4);
    font-size: var(--fs-16);
    font-weight: 700;
    color: var(--text-primary);
}

.sk-group-sub {
    font-family: var(--sk-mono);
    font-size: var(--fs-11);
    color: var(--text-muted);
    word-break: break-all;
}

.sk-group-badge {
    flex: none;
    padding: var(--space-4) var(--space-12);
    border-radius: var(--radius-pill);
    font-size: var(--fs-11);
    font-weight: 700;
    color: var(--sk-accent-dark);
    background: rgba(79, 107, 216, 0.11);
    white-space: nowrap;
}

.sk-group--safe .sk-group-badge {
    color: #b91c1c;
    background: rgba(220, 38, 38, 0.10);
}

.sk-group-body { padding: var(--space-16) var(--space-20) var(--space-20); }

.sk-group-body > p { margin-bottom: var(--space-12);
    font-size: var(--fs-13);
    line-height: var(--lh-loose);
    color: var(--text-secondary);
}

.sk-group-body b { color: var(--text-primary); }

.sk-list {
    margin: 0 0 16px;
    padding-left: 0;
    list-style: none;
}

.sk-list li {
    position: relative;
    padding-left: var(--space-20); margin-bottom: var(--space-8);
    font-size: var(--fs-13);
    line-height: var(--lh-loose);
    color: var(--text-secondary);
}

.sk-list li::before {
    content: '';
    position: absolute;
    left: var(--space-2);
    top: var(--space-8);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: rgba(79, 107, 216, 0.55);
}

.sk-group--safe .sk-list li::before { background: rgba(220, 38, 38, 0.50); }

.sk-list b { color: var(--text-primary); }




/* ---------- 组合：四套 2×2 铺满，避免 3+1 落单 ---------- */
.sk-combos {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-16);
}

.sk-combo {
    position: relative;
    overflow: hidden;
    padding: var(--space-24) var(--space-20);
    border-radius: var(--radius-8);
    border: 1px solid rgba(79, 107, 216, 0.16);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(249, 250, 255, 0.88));
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

/* 左侧渐变色条：悬停时展开，区分四套组合 */
.sk-combo::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--sk-accent), var(--sk-violet));
    transform: scaleY(0);
    transform-origin: top center;
    transition: transform var(--transition-normal);
}

.sk-combo:hover::after { transform: scaleY(1); }

.sk-combo--safe::after {
    background: linear-gradient(180deg, #e0574c, #f0913f);
}

.sk-combo:hover {
    transform: translateY(-5px);
    border-color: rgba(79, 107, 216, 0.38);
    box-shadow: 0 16px 34px rgba(79, 107, 216, 0.14);
}

.sk-combo--safe {
    border-color: rgba(220, 38, 38, 0.18);
}

.sk-combo--safe:hover {
    border-color: rgba(220, 38, 38, 0.38);
    box-shadow: 0 16px 34px rgba(220, 38, 38, 0.12);
}

.sk-combo-head {
    display: flex;
    align-items: center;
    gap: var(--space-10);
    margin-bottom: var(--space-16); padding-bottom: var(--space-12);
    border-bottom: 1px dashed var(--border-light);
}

.sk-combo-icon { font-size: var(--fs-20); }

.sk-combo-head h3 {
    font-size: var(--fs-15);
    font-weight: 700;
    color: var(--text-primary);
}

.sk-combo-steps {
    margin: 0;
    padding-left: 0;
    list-style: none;
    counter-reset: skStep;
}

.sk-combo-steps li {
    position: relative; padding-left: var(--space-28); margin-bottom: var(--space-12);
    counter-increment: skStep;
}

.sk-combo-steps li:last-child { margin-bottom: 0; }

.sk-combo-steps li::before {
    content: counter(skStep);
    position: absolute;
    left: 0;
    top: var(--space-2);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: var(--radius-6);
    font-family: var(--sk-mono);
    font-size: var(--fs-11);
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, #5c78e2, #3b52ad);
}

.sk-combo--safe .sk-combo-steps li::before {
    background: linear-gradient(135deg, #ef5350, #b91c1c);
}

.sk-combo-steps code {
    display: block;
    font-family: var(--sk-mono);
    font-size: var(--fs-12);
    font-weight: 700;
    color: var(--sk-accent-dark);
    word-break: break-all;
}

.sk-combo--safe .sk-combo-steps code { color: #b91c1c; }

.sk-combo-steps span {
    display: block; margin-top: var(--space-2);
    font-size: var(--fs-12);
    line-height: var(--lh-base);
    color: var(--text-muted);
}

/* ---------- 使用步骤 ---------- */
.sk-usage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-16); margin-bottom: var(--space-20);
}

.sk-usage-card {
    position: relative;
    padding: var(--space-24) var(--space-20) var(--space-20);
    border-radius: var(--radius-8);
    border: 1px solid rgba(79, 107, 216, 0.16);
    background: rgba(255, 255, 255, 0.86);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.sk-usage-card:hover {
    transform: translateY(-4px);
    border-color: rgba(79, 107, 216, 0.38);
    box-shadow: 0 14px 30px rgba(79, 107, 216, 0.13);
}

.sk-usage-step {
    display: inline-block;
    margin-bottom: var(--space-10);
    padding: var(--space-2) var(--space-10);
    border-radius: var(--radius-pill);
    font-family: var(--sk-mono);
    font-size: var(--fs-11);
    font-weight: 700;
    letter-spacing: 0.08em;
    color: #fff;
    background: linear-gradient(135deg, #5c78e2, #3b52ad);
}

.sk-usage-card h3 {
    margin-bottom: var(--space-10);
    font-size: var(--fs-15);
    font-weight: 700;
    color: var(--text-primary);
}

.sk-usage-cmd {
    display: block;
    margin-bottom: var(--space-12);
    padding: var(--space-8) var(--space-12);
    border-radius: var(--radius-6);
    border: 1px solid rgba(79, 107, 216, 0.16);
    background: #f7f9ff;
    font-family: var(--sk-mono);
    font-size: var(--fs-12);
    font-weight: 700;
    color: #33459a;
    word-break: break-all;
}

.sk-usage-cmd i { font-style: normal; color: #8b5cf6; }

.sk-usage-card p {
    font-size: var(--fs-12);
    line-height: var(--lh-loose);
    color: var(--text-secondary);
}

/* ---------- 收尾 ---------- */
.sk-cta {
    position: relative; padding: 42px 38px;
    border-radius: var(--radius-12);
    border: 1px solid rgba(79, 107, 216, 0.32);
    background:
        radial-gradient(circle at 90% 14%, rgba(139, 92, 246, 0.24), transparent 55%),
        linear-gradient(135deg, rgba(79, 107, 216, 0.12), rgba(255, 255, 255, 0.92) 62%);
    overflow: hidden;
}

.sk-cta-glyph {
    position: absolute;
    right: var(--space-16);
    bottom: -32px;
    font-family: var(--font-display);
    font-size: 170px;
    line-height: 1;
    color: rgba(79, 107, 216, 0.10);
    pointer-events: none;
}

.sk-cta h2 {
    position: relative;
    margin-bottom: var(--space-10);
    font-family: var(--font-display);
    font-size: var(--fs-24);
    font-weight: 400;
    color: var(--text-primary);
}

.sk-cta p {
    position: relative;
    max-width: 660px;
    font-size: var(--fs-13);
    line-height: var(--lh-loose);
    color: var(--text-secondary);
}


/* 矩阵底部统计 */
.sk-matrix-stats {
    display: grid;
    /* 5 个统计卡铺满一行，避免第 5 张落单到第二行 */
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: var(--space-16); margin-top: var(--space-20);
}

.sk-matrix-stat {
    position: relative;
    padding: var(--space-20) var(--space-16);
    border-radius: var(--radius-8);
    border: 1px solid rgba(79, 107, 216, 0.18);
    background:
        radial-gradient(120% 140% at 100% 0%, rgba(139, 92, 246, 0.12), transparent 60%),
        rgba(255, 255, 255, 0.9);
    text-align: center;
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.sk-matrix-stat::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--sk-accent), var(--sk-violet));
}

.sk-matrix-stat:hover {
    transform: translateY(-4px);
    border-color: rgba(79, 107, 216, 0.42);
    box-shadow: 0 14px 30px rgba(79, 107, 216, 0.14);
}

.sk-matrix-stat b {
    display: block;
    font-family: var(--sk-mono);
    font-size: var(--fs-30);
    font-weight: 700;
    line-height: 1.1;
    color: var(--sk-accent);
}

.sk-matrix-stat span {
    display: block;
    margin-top: var(--space-6);
    font-size: var(--fs-12);
    font-weight: 600;
    color: var(--text-muted);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1199px) {
    .sk-sp { grid-template-columns: 1fr; }
    .sk-combos, .sk-usage-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 991px) {
    .sk-intro-bento { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .sk-intro-card--feature { grid-column: span 2; }
    .sk-matrix-stats { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 767px) {
    .sk-section { padding: var(--space-20) var(--space-16); }
    .sk-intro-bento, .sk-combos, .sk-usage-grid { grid-template-columns: 1fr; }
    .sk-intro-card--feature { grid-column: auto; }
    .sk-matrix-stats { grid-template-columns: repeat(2, 1fr); }
    .sk-matrix-stat { padding: var(--space-16) var(--space-12); }
    .sk-matrix-stat b { font-size: var(--fs-24); }
    .sk-sp { padding: var(--space-20) var(--space-16); }
    .sk-group-head { flex-wrap: wrap; padding: var(--space-16) ; }
    .sk-group-badge { order: 3; }
    .sk-group-body { padding: var(--space-16) ; }
    .sk-cta { padding: var(--space-28) var(--space-20); }
    .sk-table td, .sk-table th { padding: var(--space-10) var(--space-12); }
}

/* ================================================================
   以下为第二版新增组件与视觉强化（能力清单风 → 技能图谱）
   新增：扫描线 / 小标题 / 工作流脊 / 技能解剖图 / 调用策略卡 /
        rank 列表 / 轻时间线 / 工程对卡 / 新色阶（进阶组）
   ================================================================ */

/* ---------- 头图升级：扫描线 + 靛蓝紫光带 ---------- */
.sk-masthead-scan {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: 90px;
    background: linear-gradient(180deg, transparent, rgba(79, 107, 216, 0.10) 55%, rgba(139, 92, 246, 0.08) 75%, transparent);
    animation: skScan 7s linear infinite;
    pointer-events: none;
    z-index: 1;
}

@keyframes skScan {
    0%   { transform: translateY(-120px); opacity: 0; }
    12%  { opacity: 1; }
    88%  { opacity: 1; }
    100% { transform: translateY(380px); opacity: 0; }
}

/* ---------- 图例新增：进阶/新兴 ---------- */
.sk-dot--new { background: #8b5cf6; }

/* ---------- 通用：小标题 ---------- */
.sk-subtitle {
    display: flex;
    align-items: center;
    gap: var(--space-10);
    margin: 30px 0 14px; padding-bottom: var(--space-8);
    font-size: var(--fs-15);
    font-weight: 700;
    color: var(--text-primary);
    border-bottom: 1px dashed rgba(79, 107, 216, 0.26);
}

.sk-subtitle::before {
    content: '';
    width: 4px;
    height: 15px;
    border-radius: var(--radius-2);
    background: linear-gradient(180deg, var(--sk-violet), var(--sk-accent));
}

.sk-para-note {
    margin: 12px 0 0; padding-left: var(--space-12);
    border-left: 3px solid rgba(79, 107, 216, 0.3);
    font-size: var(--fs-13);
    line-height: var(--lh-loose);
    color: var(--text-secondary);
}

.sk-para-note b { color: var(--sk-accent-dark); }

/* ---------- 矩阵：星标数值 ---------- */
.sk-star {
    display: inline-block;
    margin-top: var(--space-4);
    padding: 1px var(--space-8);
    border-radius: var(--radius-pill);
    background: rgba(79, 107, 216, 0.09);
    font-family: var(--sk-mono);
    font-size: var(--fs-11);
    font-weight: 700;
    color: var(--sk-accent-dark);
    white-space: nowrap;
}

/* 进阶组行：左侧紫色标记（基础色条 .sk-table tbody tr td:first-child::before 优先级更高，故用 !important） */
.sk-row-new td:first-child::before { background: var(--sk-violet) !important; }
.sk-table tbody tr.sk-row-new:hover { background: rgba(139, 92, 246, 0.055); }

/* ---------- 01 superpowers 工作流脊 ----------
   v3 布局：不再用 auto-fit 自动换行（会排出 5+2 的碎行），
   改为显式两行 4 + 4：第二行用同宽占位卡补齐，
   视觉上是匀称的 2x4，不会有孤零零落单的一行。 */
.sk-flow-intro {
    margin: 0 0 14px; padding-left: var(--space-12);
    border-left: 3px solid rgba(139, 92, 246, 0.34);
    font-size: var(--fs-13);
    line-height: var(--lh-loose);
    color: var(--text-secondary);
}

.sk-flow {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: var(--space-10);
}

.sk-flow-row {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-10);
}

/* 第二行：3 步 + 1 张成果卡，列宽与第一行完全一致 */
.sk-flow-row--four > * { min-width: 0; }

.sk-flow-step {
    position: relative;
    display: flex;
    flex-direction: column; gap: var(--space-8);
    height: 100%; padding: var(--space-16) var(--space-16) var(--space-12) ;
    border-radius: var(--radius-12);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-top: 3px solid var(--sk-violet);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.97), rgba(250, 249, 255, 0.94));
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

/* 步骤之间的连接箭头：只在网格行内、且非行首元素显示 */
.sk-flow-row > .sk-flow-step + .sk-flow-step::before {
    content: '';
    position: absolute;
    top: var(--space-24);
    left: -9px;
    width: 8px;
    height: 1px;
    background: linear-gradient(90deg, rgba(139, 92, 246, 0.15), rgba(139, 92, 246, 0.55));
}

.sk-flow-step:hover {
    transform: translateY(-4px);
    border-color: rgba(139, 92, 246, 0.5);
    box-shadow: 0 14px 30px rgba(139, 92, 246, 0.16);
}

.sk-flow-idx {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--sk-accent), var(--sk-violet));
    color: #fff;
    font-family: var(--sk-mono);
    font-size: var(--fs-11);
    font-weight: 700;
}

.sk-flow-body { min-width: 0; }

.sk-flow-name {
    display: block;
    margin-bottom: var(--space-6);
    font-family: var(--sk-mono);
    font-size: var(--fs-12);
    font-weight: 700;
    line-height: var(--lh-tight);
    color: var(--sk-accent-dark);
    word-break: break-word;
    overflow-wrap: anywhere;
}

.sk-flow-desc {
    display: block;
    font-style: normal;
    font-size: var(--fs-12);
    line-height: var(--lh-base);
    color: var(--text-muted);
}

/* 终点卡：绿色收束，和 7 个步骤区分开，也让第二行不留空位 */
.sk-flow-step--outcome {
    border-top-color: #5d9743;
    border-color: rgba(93, 151, 67, 0.24);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.97), rgba(246, 251, 243, 0.94));
}

.sk-flow-step--outcome .sk-flow-idx {
    background: linear-gradient(135deg, #6fb04f, #4f8a35);
}

.sk-flow-step--outcome .sk-flow-name { color: #4f8a35; }

.sk-flow-step--outcome:hover {
    border-color: rgba(93, 151, 67, 0.5);
    box-shadow: 0 14px 30px rgba(93, 151, 67, 0.16);
}

/* ---------- 05 技能解剖图 ---------- */
.sk-anatomy {
    display: grid;
    grid-template-columns: 1.45fr 1fr;
    gap: var(--space-16);
}

.sk-anatomy-file {
    padding: var(--space-16);
    border-radius: var(--radius-8);
    border: 1px solid rgba(30, 41, 59, 0.1);
    background: rgba(23, 28, 45, 0.97);
    font-family: var(--sk-mono);
    overflow-x: auto;
}

.sk-anatomy-line {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: var(--space-8);
    padding: var(--space-6) var(--space-8);
    border-radius: var(--radius-6);
    font-size: var(--fs-12);
    line-height: var(--lh-ui);
    color: #cbd5e1;
    transition: background-color var(--transition-fast);
}

.sk-anatomy-line:hover { background: rgba(139, 92, 246, 0.12); }

.sk-anatomy-line--fm {
    color: #f0abfc;
    border-bottom: 1px dashed rgba(139, 92, 246, 0.28);
}

.sk-anatomy-line--fm + .sk-anatomy-line--fm { border-bottom: none; }

.sk-anatomy-line--body { color: #e2e8f0; }

.sk-anatomy-key { color: #93c5fd; }
.sk-anatomy-val { color: #fde68a; }

.sk-anatomy-line--fm .sk-anatomy-key { color: #f0abfc; }

.sk-anatomy-note {
    margin-left: auto; padding-left: var(--space-12);
    font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
    font-size: var(--fs-11);
    color: #7f8ea8;
    text-align: right;
}

.sk-anatomy-side {
    padding: var(--space-16);
    border-radius: var(--radius-8);
    border: 1px dashed rgba(79, 107, 216, 0.3);
    background: rgba(255, 255, 255, 0.9);
}

.sk-anatomy-side-title {
    margin-bottom: var(--space-6);
    font-family: var(--sk-mono);
    font-size: var(--fs-11);
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--sk-accent);
    text-transform: uppercase;
}

.sk-anatomy-side-title:not(:first-child) { margin-top: var(--space-16); }

.sk-anatomy-side ul { margin: 0 0 0; padding-left: 0; list-style: none; }

.sk-anatomy-side li {
    position: relative;
    padding: 5px 0 5px 15px;
    font-size: var(--fs-12);
    line-height: var(--lh-base);
    color: var(--text-secondary);
}

.sk-anatomy-side li::before {
    content: '';
    position: absolute;
    left: 0;
    top: var(--space-12);
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--sk-violet);
}

.sk-anatomy-side b { color: var(--text-primary); }

/* ---------- 05 调用策略卡 ---------- */
.sk-policy-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-16);
    margin-top: var(--space-4);
}

.sk-policy { padding: var(--space-16) ;
    border-radius: var(--radius-8);
    border: 1px solid rgba(79, 107, 216, 0.18);
    background: rgba(255, 255, 255, 0.92);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.sk-policy:hover {
    transform: translateY(-4px);
    border-color: rgba(79, 107, 216, 0.44);
    box-shadow: 0 14px 30px rgba(79, 107, 216, 0.13);
}

.sk-policy-tag {
    display: inline-block; margin-bottom: var(--space-8);
    padding: var(--space-2) var(--space-10);
    border-radius: var(--radius-pill);
    font-size: var(--fs-11);
    font-weight: 700;
}

.sk-policy-tag--model { color: #33459a; background: rgba(79, 107, 216, 0.13); }
.sk-policy-tag--user  { color: #7e3bd0; background: rgba(139, 92, 246, 0.13); }
.sk-policy-tag--none  { color: #5f7268; background: rgba(138, 156, 146, 0.18); }

.sk-policy > code {
    display: block; margin-bottom: var(--space-8);
    padding: var(--space-6) var(--space-8);
    border-radius: var(--radius-6);
    background: rgba(30, 41, 59, 0.055);
    font-family: var(--sk-mono);
    font-size: var(--fs-11);
    color: var(--sk-accent-dark);
    word-break: break-all;
}

.sk-policy p {
    font-size: var(--fs-12);
    line-height: var(--lh-base);
    color: var(--text-secondary);
}

/* ---------- 05 rank 列表 ---------- */
.sk-rank-list {
    display: grid;
    gap: var(--space-8);
    margin-top: var(--space-4);
}

.sk-rank {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-12);
    padding: var(--space-12) var(--space-16);
    border-radius: var(--radius-12);
    border: 1px solid rgba(79, 107, 216, 0.16);
    border-left: 4px solid var(--sk-accent);
    background: rgba(255, 255, 255, 0.9);
    transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.sk-rank:hover { transform: translateX(4px); background: rgba(79, 107, 216, 0.045); }

.sk-rank > b {
    min-width: 34px;
    font-family: var(--sk-mono);
    font-size: var(--fs-14);
    font-weight: 700;
    color: var(--sk-accent);
    text-align: center;
}

.sk-rank > code {
    min-width: 190px;
    font-family: var(--sk-mono);
    font-size: var(--fs-12);
    font-weight: 700;
    color: #1e293b;
    word-break: break-all;
}

.sk-rank > span {
    flex: 1;
    min-width: 150px;
    font-size: var(--fs-12);
    color: var(--text-muted);
}

.sk-rank > span code {
    font-family: var(--sk-mono);
    font-size: var(--fs-11);
    color: var(--sk-accent-dark);
    background: rgba(79, 107, 216, 0.08);
    padding: 1px var(--space-4);
    border-radius: var(--radius-4);
}

/* 逐级降低的强调度，暗示优先级递减 */
.sk-rank:nth-child(2) { border-left-color: #6379dd; }
.sk-rank:nth-child(3) { border-left-color: #7d90e4; }
.sk-rank:nth-child(4) { border-left-color: #98a7ea; }
.sk-rank:nth-child(5) { border-left-color: #aebaf0; }
.sk-rank:nth-child(6) { border-left-color: #c2cbf5; }

/* ---------- 05 轻时间线 ---------- */
.sk-timeline-lite {
    position: relative;
    margin-top: var(--space-4);
    padding-left: var(--space-24);
}

.sk-timeline-lite::before {
    content: '';
    position: absolute;
    left: var(--space-6);
    top: var(--space-8);
    bottom: var(--space-8);
    width: 2px;
    border-radius: var(--radius-2);
    background: linear-gradient(180deg, var(--sk-accent), rgba(139, 92, 246, 0.35), rgba(79, 107, 216, 0.1));
}

.sk-timeline-item {
    position: relative; padding-bottom: var(--space-16);
}

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

.sk-timeline-dot {
    position: absolute;
    left: -24px;
    top: var(--space-4);
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid var(--sk-accent);
    box-shadow: 0 0 0 4px rgba(79, 107, 216, 0.13);
}

.sk-timeline-item:nth-child(2) .sk-timeline-dot { border-color: #6379dd; }
.sk-timeline-item:nth-child(3) .sk-timeline-dot { border-color: #8b5cf6; }
.sk-timeline-item:nth-child(4) .sk-timeline-dot { border-color: #a78bfa; }

.sk-timeline-item > div > b {
    display: block;
    margin-bottom: var(--space-4);
    font-size: var(--fs-13);
    font-weight: 700;
    color: var(--text-primary);
}

.sk-timeline-item p {
    font-size: var(--fs-12);
    line-height: var(--lh-base);
    color: var(--text-secondary);
}

.sk-timeline-item p b { color: var(--sk-accent-dark); }

/* ---------- 05 工程对卡 ---------- */
.sk-engineer-pair {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-16);
    margin-top: var(--space-4);
}

.sk-engineer-card { padding: var(--space-16) var(--space-20) ;
    border-radius: var(--radius-8);
    border: 1px solid rgba(79, 107, 216, 0.18);
    background:
        radial-gradient(120% 140% at 100% 0%, rgba(139, 92, 246, 0.08), transparent 58%),
        rgba(255, 255, 255, 0.92);
    box-shadow: var(--shadow-sm);
}

.sk-engineer-card h4 {
    margin-bottom: var(--space-10);
    font-size: var(--fs-14);
    font-weight: 700;
    color: var(--text-primary);
}

.sk-engineer-card ul { margin: 0; padding-left: 0; list-style: none; }

.sk-engineer-card li {
    position: relative;
    padding: 5px 0 5px 16px;
    font-size: var(--fs-12);
    line-height: var(--lh-base);
    color: var(--text-secondary);
}

.sk-engineer-card li::before {
    content: '';
    position: absolute;
    left: 0;
    top: var(--space-12);
    width: 6px;
    height: 6px;
    border-radius: var(--radius-2);
    background: linear-gradient(135deg, var(--sk-accent), var(--sk-violet));
}

/* ---------- 响应式补齐 ---------- */
@media (max-width: 1199px) {
    .sk-policy-grid,
    .sk-engineer-pair { grid-template-columns: repeat(2, 1fr); }
    .sk-anatomy { grid-template-columns: 1fr; }
    /* 工作流：仍保持两行，但每行 2 列，避免卡片被压得过窄 */
    .sk-flow-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 991px) {
    .sk-policy-grid { grid-template-columns: 1fr; }
}

@media (max-width: 767px) {
    .sk-engineer-pair { grid-template-columns: 1fr; }
    /* 工作流：单列直排，箭头改为向下，保持「一步接一步」的读感 */
    .sk-flow-row { grid-template-columns: minmax(0, 1fr); }
    .sk-flow-row > .sk-flow-step + .sk-flow-step::before {
        top: -9px;
        left: var(--space-28);
        width: 1px;
        height: 8px;
        background: linear-gradient(180deg, rgba(139, 92, 246, 0.15), rgba(139, 92, 246, 0.55));
    }
    .sk-anatomy-file { padding: var(--space-12); }
    .sk-anatomy-line { font-size: var(--fs-11); }
    .sk-anatomy-note { display: none; }
    .sk-rank > code { min-width: 0; }
    .sk-star { font-size: var(--fs-11); }
}

@media (prefers-reduced-motion: reduce) {
    .sk-masthead-scan { animation: none; }
}



/* ================================================================
   视觉强化 v3：页面极光底纹 / 标题渐变流光 / 卡片入场微动效
   ================================================================ */

/* 页面级极光底纹：固定在大板块后方，低透明度，不干扰阅读 */
.sk-page { position: relative; }

.sk-page::before {
    content: '';
    position: absolute;
    inset: 40px 0 auto 0;
    height: 620px;
    pointer-events: none;
    z-index: 0;
    background:
        radial-gradient(42% 46% at 12% 18%, rgba(79, 107, 216, 0.10), transparent 70%),
        radial-gradient(46% 44% at 88% 6%, rgba(139, 92, 246, 0.10), transparent 72%);
    filter: blur(6px);
    animation: skAurora 16s ease-in-out infinite alternate;
}

@keyframes skAurora {
    0%   { transform: translate3d(0, 0, 0) scale(1); opacity: 0.85; }
    100% { transform: translate3d(0, -18px, 0) scale(1.03); opacity: 1; }
}

.sk-page > * { position: relative; z-index: 1; }

/* 头图主标题：渐变文字 + 轻微流光位移 */
.sk-masthead .pg-title {
    background: linear-gradient(100deg, var(--text-primary) 12%, var(--sk-accent) 48%, var(--sk-violet) 78%, var(--text-primary) 100%);
    background-size: 220% 100%;
    -webkit-background-clip: text;
            background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: skTitleFlow 9s ease-in-out infinite;
}

.sk-masthead .pg-title .pg-title-accent { -webkit-text-fill-color: var(--sk-accent); background: none; }

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

/* 头图胶囊卡：悬停点亮 */
.sk-masthead .pg-chip { transition: transform var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast); }
.sk-masthead .pg-chip:hover { transform: translateY(-2px); background: rgba(79, 107, 216, 0.08); }


@media (prefers-reduced-motion: reduce) {
    .sk-page::before,
    .sk-masthead .pg-title,
    .sk-masthead-scan { animation: none !important; }
    .sk-masthead .pg-title { -webkit-text-fill-color: inherit; background: none; }
    .sk-masthead .pg-title .pg-title-accent { -webkit-text-fill-color: var(--sk-accent); }
}


/* ================================================================
   v4：需求反馈版
   1) 大模块间距收紧（原来是 48px，视觉割裂）
   2) 技能矩阵改为 9 个 Tab 切换
   3) superpowers 技能库 2×2 分类栏
   4) 组合卡补充副标题 / 产出说明
   ================================================================ */

/* ---------- 大模块上下间距收紧：48 → 24（间距阶 --space-24），多屏阅读更连贯 ---------- */
.sk-page .sk-section { margin-top: var(--space-24); padding: var(--space-24) ;
}

/* 头图与首个模块之间也收紧（base 的 pg-masthead 是 32px） */
.sk-page .sk-masthead { margin-bottom: var(--space-20); }

/* 首个模块（头图后的 00 段）与其后的模块间距一致，但头图本身不动 */
.sk-page .sk-masthead + .sk-section { margin-top: 0; }

/* 模块内小标题的上下留白同步收紧，避免「模块小了、内部却还是大留白」 */
.sk-page .sk-subtitle { margin: 22px 0 12px; }
.sk-page .sk-flow-intro { margin-bottom: var(--space-12); }

/* 模块底部统计卡与表格的上边距 */
.sk-page .sk-matrix-stats { margin-top: var(--space-16); }

/* ---------- 02 技能矩阵：阶段 Tab ---------- */
/* v5：序号去掉后 9 个 Tab 压缩到一行；胶囊改为「分隔条 + 共享滑动底」的现代分段控件 */
.sk-matrix-tabs {
    display: flex;
    flex-wrap: nowrap;
    align-items: stretch;
    gap: var(--space-2);
    width: 100%;
    padding: var(--space-4);
    margin-bottom: var(--space-16);
    border-radius: var(--radius-16);
    border: 1px solid rgba(79, 107, 216, 0.15);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(79, 107, 216, 0.05));
    box-shadow: 0 1px 2px rgba(23, 32, 71, 0.05), inset 0 1px 0 rgba(255, 255, 255, 0.75);
}

.sk-mtab {
    position: relative;
    flex: 1 1 0;
    min-width: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-6);
    padding: var(--space-8) var(--space-10);
    border-radius: var(--radius-12);
    font-size: var(--fs-13);
    font-weight: 600;
    letter-spacing: 0.2px;
    color: var(--text-secondary);
    white-space: nowrap;
    transition: color var(--transition-fast), background-color var(--transition-fast),
                box-shadow var(--transition-fast), transform var(--transition-fast);
}

/* Tab 之间的细竖线分隔：靠分隔线而不是留白区分，才能把 9 个塞进一行 */
.sk-mtab + .sk-mtab::before {
    content: '';
    position: absolute;
    left: -1px;
    top: 50%;
    width: 1px;
    height: 14px;
    background: rgba(79, 107, 216, 0.16);
    transform: translateY(-50%);
    transition: opacity var(--transition-fast);
}

.sk-mtab:hover {
    color: var(--sk-accent-dark);
    background: rgba(255, 255, 255, 0.85);
}

/* 悬停/激活时，相邻两条分隔线一起隐去，避免卡片与分隔线打架 */
.sk-mtab:hover::before,
.sk-mtab:hover + .sk-mtab::before,
.sk-mtab.active::before,
.sk-mtab.active + .sk-mtab::before {
    opacity: 0;
}

.sk-mtab.active {
    color: #fff;
    background: linear-gradient(135deg, #5c78e2, #3b52ad);
    box-shadow: 0 4px 12px rgba(59, 82, 173, 0.34), inset 0 1px 0 rgba(255, 255, 255, 0.22);
}

.sk-mtab.active:hover {
    color: #fff;
    transform: translateY(-1px);
}

.sk-mtab.active .pg-tab-count {
    background: rgba(255, 255, 255, 0.26);
    color: #fff;
}

.sk-mtab .pg-tab-count {
    flex: none;
    padding: 1px var(--space-6);
    border-radius: var(--radius-pill);
    font-size: var(--fs-11);
    font-weight: 700;
    line-height: var(--lh-ui);
    background: rgba(79, 107, 216, 0.13);
    color: var(--sk-accent-dark);
    font-variant-numeric: tabular-nums;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.sk-mtab:focus-visible {
    outline: 2px solid rgba(79, 107, 216, 0.55);
    outline-offset: 2px;
}

/* 图例补一条「可横向滚动」的提示 */
.sk-legend-tip {
    margin-left: auto;
    font-size: var(--fs-11);
    color: var(--text-muted);
}

/* 每个 Tab 面板顶部的阶段说明 */
.sk-panel-note {
    margin: 0 0 12px;
    padding: var(--space-10) var(--space-16);
    border-radius: var(--radius-8);
    border-left: 3px solid rgba(79, 107, 216, 0.42);
    background: rgba(79, 107, 216, 0.05);
    font-size: var(--fs-13);
    line-height: var(--lh-loose);
    color: var(--text-secondary);
}

.sk-panel-note b { color: var(--sk-accent-dark); }

/* 面板切换动画收敛一点，避免整页跳动 */
.sk-matrix-panels .pg-panel { animation-duration: 0.32s; }

/* ---------- 01 superpowers 技能库：2×2 分类栏 ---------- */
.sk-sp-lib {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-12);
}

.sk-sp-lib-col {
    display: flex;
    flex-direction: column;
    min-width: 0; padding: var(--space-16) var(--space-16) var(--space-12) ;
    border-radius: var(--radius-8);
    border: 1px solid rgba(79, 107, 216, 0.16);
    background: rgba(255, 255, 255, 0.88);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.sk-sp-lib-col:hover {
    transform: translateY(-3px);
    border-color: rgba(139, 92, 246, 0.36);
    box-shadow: 0 14px 30px rgba(139, 92, 246, 0.11);
}

.sk-sp-lib-col--flow   { border-top: 3px solid var(--sk-accent); }
.sk-sp-lib-col--build  { border-top: 3px solid #5d9743; }
.sk-sp-lib-col--collab { border-top: 3px solid #e0913f; }
.sk-sp-lib-col--meta   { border-top: 3px solid var(--sk-violet); }

.sk-sp-lib-head {
    display: flex;
    align-items: flex-start; gap: var(--space-10);
    margin-bottom: var(--space-12); padding-bottom: var(--space-10);
    border-bottom: 1px dashed var(--border-light);
}

.sk-sp-lib-icon { font-size: var(--fs-20); line-height: 1.2; }

.sk-sp-lib-head > div { flex: 1; min-width: 0; }

.sk-sp-lib-head h4 {
    font-size: var(--fs-14);
    font-weight: 700;
    color: var(--text-primary);
}

.sk-sp-lib-head p { margin-top: var(--space-2);
    font-size: var(--fs-12);
    color: var(--text-muted);
}

.sk-sp-lib-count {
    flex: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 24px;
    height: 24px;
    padding: 0 8px;
    border-radius: var(--radius-pill);
    font-family: var(--sk-mono);
    font-size: var(--fs-11);
    font-weight: 700;
    color: var(--sk-accent-dark);
    background: rgba(79, 107, 216, 0.12);
}

.sk-sp-lib-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.sk-sp-lib-list li {
    position: relative;
    padding: 9px 0 9px 16px;
    border-bottom: 1px dashed var(--border-light);
}

.sk-sp-lib-list li:last-child { border-bottom: none; padding-bottom: var(--space-2); }

.sk-sp-lib-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: var(--space-16);
    width: 6px;
    height: 6px;
    border-radius: var(--radius-2);
    background: linear-gradient(135deg, var(--sk-accent), var(--sk-violet));
}

.sk-sp-lib-list b {
    display: block;
    margin-bottom: var(--space-4);
    font-family: var(--sk-mono);
    font-size: var(--fs-12);
    font-weight: 700;
    color: var(--sk-accent-dark);
    word-break: break-all;
}

.sk-sp-lib-list span {
    display: block;
    font-size: var(--fs-12);
    line-height: var(--lh-base);
    color: var(--text-secondary);
}

.sk-sp-lib-list span b { display: inline; font-family: inherit; color: var(--text-primary); }

/* superpowers 主卡头部：标签与名称同一行，避免一高一低 */
.sk-sp-head {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-12);
}

.sk-sp-head h3 { margin: 0; }

/* ---------- 04 组合：副标题 + 产出说明 ---------- */
.sk-combo-head { align-items: flex-start; flex-wrap: wrap; }

.sk-combo-sub {
    flex-basis: 100%;
    margin: 4px 0 0 31px;
    font-size: var(--fs-12);
    color: var(--text-muted);
}

.sk-combo-tail {
    margin: 14px 0 0; padding-top: var(--space-10);
    border-top: 1px dashed var(--border-light);
    font-size: var(--fs-12);
    line-height: 1.7;
    color: var(--sk-accent-dark);
    font-weight: 600;
}

.sk-combo--safe .sk-combo-tail { color: #b91c1c; }

/* ---------- 响应式补充 ---------- */
@media (max-width: 991px) {
    .sk-sp-lib { grid-template-columns: 1fr; }
}

/* 中等屏：9 个 Tab 一行开始拥挤，先收窄内边距与字号，尽量仍排一行 */
@media (max-width: 1100px) {
    .sk-mtab { gap: var(--space-4); padding: var(--space-8); font-size: var(--fs-12); }
    .sk-mtab .pg-tab-count { padding: 1px var(--space-6); font-size: var(--fs-11); }
}

/* 窄屏：一行实在放不下时，退化为横向滑动，且滚动条弱化以免抢视觉 */
@media (max-width: 900px) {
    .sk-matrix-tabs {
        overflow-x: auto;
        scrollbar-width: none;
        -webkit-overflow-scrolling: touch;
    }
    .sk-matrix-tabs::-webkit-scrollbar { display: none; }
    .sk-mtab { flex: 0 0 auto; padding: var(--space-8) var(--space-12); font-size: var(--fs-12); }
}

@media (max-width: 767px) {
    .sk-page .sk-section { margin-top: var(--space-16); padding: var(--space-20) var(--space-16); }
    .sk-legend-tip { display: none; }
    .sk-combo-sub { margin-left: 0; }
}


/* ================================================================
   侧栏「本页速览」 widget —— 本页专属换肤（技能卡风 · 靛蓝紫）
   外层 .widget / .widget-title 沿用「链接伙伴」的卡片外壳，标题条保留全站默认绿色；
   只重绘 widget-content 内部：条目做成「技能卡」：左侧序号方块（渐变），
   名称用等宽体，底部一条渐变进度条。条目内容为本页章节锚点（见 skills.html 侧栏）。
   ================================================================ */

.page-skills .topic-picks-body {
    gap: var(--space-8);
    background:
        radial-gradient(120% 90% at 0% 0%, rgba(79, 107, 216, 0.08), transparent 62%);
}

.page-skills .topic-pick-row {
    position: relative;
    overflow: hidden;
    padding: var(--space-10);
    border: 1px solid rgba(79, 107, 216, 0.16);
    border-radius: var(--radius-12);
    background:
        linear-gradient(150deg, rgba(255, 255, 255, 0.72), rgba(243, 245, 254, 0.55));
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

/* 顶部一条渐变细线：hover 时从左向右展开 */
.page-skills .topic-pick-row::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--sk-accent), var(--sk-violet) 60%, transparent 92%);
    transform: scaleX(0.18);
    transform-origin: left center;
    transition: transform var(--transition-normal);
}

.page-skills .topic-pick-idx {
    flex-shrink: 0;
    width: 26px;
    height: 26px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-8);
    font-size: var(--fs-11);
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: #fff;
    background: linear-gradient(135deg, var(--sk-accent), var(--sk-violet));
    box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.45), 0 2px 6px rgba(79, 107, 216, 0.28);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

/* 序号可按序换色：第 3、4 项走紫系，避免四张卡一个色 */
.page-skills .topic-pick-row:nth-child(1) .topic-pick-idx,
.page-skills .topic-pick-row:nth-child(2) .topic-pick-idx { background: linear-gradient(135deg, #4f6bd8, #7c92ea); }
.page-skills .topic-pick-row:nth-child(3) .topic-pick-idx,
.page-skills .topic-pick-row:nth-child(4) .topic-pick-idx { background: linear-gradient(135deg, #7b52d3, #a98cf7); }

.page-skills .topic-pick-name {
    font-family: var(--sk-mono);
    font-size: var(--fs-12);
    letter-spacing: -0.01em;
}

.page-skills .topic-pick-desc {
    font-size: var(--fs-11);
    color: rgba(108, 118, 158, 0.9);
}

/* 右侧的小箭头：默认收在右边，hover 才亮起来 */
.page-skills .topic-pick-go {
    flex-shrink: 0;
    width: 14px;
    height: 14px;
    position: relative;
    opacity: 0.35;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.page-skills .topic-pick-go::before,
.page-skills .topic-pick-go::after {
    content: '';
    position: absolute;
    background: var(--sk-accent-dark);
}

.page-skills .topic-pick-go::before {
    top: var(--space-6);
    left: var(--space-2);
    width: 10px;
    height: 2px;
    border-radius: var(--radius-2);
}

.page-skills .topic-pick-go::after {
    top: var(--space-2);
    right: var(--space-2);
    width: 6px;
    height: 6px;
    border-top: 2px solid var(--sk-accent-dark);
    border-right: 2px solid var(--sk-accent-dark);
    background: none;
    transform: rotate(45deg);
}

.page-skills .topic-pick-row:hover {
    border-color: rgba(79, 107, 216, 0.45);
    background: linear-gradient(150deg, rgba(255, 255, 255, 0.92), rgba(238, 241, 254, 0.8));
    box-shadow: 0 4px 14px rgba(79, 107, 216, 0.16);
    transform: translateY(-2px);
}

.page-skills .topic-pick-row:hover::before { transform: scaleX(1); }
.page-skills .topic-pick-row:hover .topic-pick-name { color: var(--sk-accent-dark); }
.page-skills .topic-pick-row:hover .topic-pick-idx {
    transform: scale(1.08);
    box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.45), 0 3px 10px rgba(79, 107, 216, 0.38);
}
.page-skills .topic-pick-row:hover .topic-pick-go {
    opacity: 1;
    transform: translateX(2px);
}

@media (prefers-reduced-motion: reduce) {
    .page-skills .topic-pick-row,
    .page-skills .topic-pick-row:hover { transform: none; }
    .page-skills .topic-pick-row::before { transition: none; }
}

/* ================================================================
   技能打包下载（hero CTA / 状态台 / 四张卡 / 双面板 / 勾选 / 行内单下）
   强调色沿用本页靛蓝（--sk-accent），方法论走紫（--sk-violet），
   下载动作统一「靛蓝底 + 白色前景」，状态台按 idle/warming/ready/downloading/error 变色
   ================================================================ */

/* ---------- hero 主 CTA ---------- */
.sk-dl-cta {
    display: inline-flex;
    align-items: center; gap: var(--space-8);
    position: relative; padding-right: var(--space-12);
    background-image: linear-gradient(180deg, var(--sk-accent), var(--sk-accent-dark));
    border-color: transparent;
    box-shadow: 0 6px 18px rgba(79, 107, 216, 0.28);
}

.sk-dl-cta:hover {
    box-shadow: 0 10px 24px rgba(79, 107, 216, 0.36);
    transform: translateY(-1px);
}

.sk-dl-cta-icon {
    display: inline-grid;
    place-items: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    font-size: var(--fs-12);
    line-height: 1;
}

.sk-dl-cta-text {
    font-weight: 600;
    letter-spacing: -0.01em;
}

.sk-dl-cta-count {
    font-family: var(--sk-mono);
    font-size: var(--fs-11);
    letter-spacing: 0.05em;
    padding: var(--space-2) var(--space-6);
    border-radius: var(--radius-pill);
    background: rgba(255, 255, 255, 0.18);
    color: #fff;
}

body.sk-dl-loading .sk-dl-cta { pointer-events: none; opacity: 0.72; }

/* 预热完成后主按钮切到「秒下」态：描边转暖绿，和「还没热」明显区分 */
body.sk-dl-ready .sk-dl-cta {
    background-image: linear-gradient(180deg, #2f9e6f, #227a55);
    box-shadow: 0 6px 18px rgba(34, 122, 85, 0.28);
}

/* ---------- 下载区块外壳 ---------- */
.sk-download { margin-top: var(--space-6); }

.sk-dl {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: var(--space-16);
    padding: var(--space-20);
    border-radius: var(--radius-16);
    border: 1px solid rgba(79, 107, 216, 0.16);
    background:
        radial-gradient(120% 130% at 100% 0%, rgba(79, 107, 216, 0.10), transparent 58%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.97), rgba(248, 250, 255, 0.92));
    box-shadow: 0 2px 10px rgba(23, 32, 71, 0.05), inset 0 1px 0 rgba(255, 255, 255, 0.8);
    overflow: hidden;
}

.sk-dl::before {
    content: '';
    position: absolute;
    inset: 0 0 auto 0;
    height: 3px;
    background: linear-gradient(90deg, var(--sk-accent), var(--sk-violet), var(--sk-accent));
    opacity: 0.85;
}

/* ---------- A. 状态台 ---------- */
.sk-dl-stage {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-16);
    flex-wrap: wrap;
    padding: var(--space-12) var(--space-16);
    border-radius: var(--radius-16);
    border: 1px solid rgba(79, 107, 216, 0.16);
    background: linear-gradient(120deg, rgba(79, 107, 216, 0.07), rgba(255, 255, 255, 0.6));
    overflow: hidden;
}

.sk-dl-stage[data-state='warming'] {
    border-color: rgba(79, 107, 216, 0.26);
}

.sk-dl-stage[data-state='ready'] {
    border-color: rgba(47, 158, 111, 0.34);
    background: linear-gradient(120deg, rgba(47, 158, 111, 0.10), rgba(255, 255, 255, 0.62));
}

.sk-dl-stage[data-state='downloading'] {
    border-color: rgba(139, 92, 246, 0.32);
    background: linear-gradient(120deg, rgba(139, 92, 246, 0.10), rgba(255, 255, 255, 0.62));
}

.sk-dl-stage[data-state='error'] {
    border-color: rgba(197, 48, 48, 0.3);
    background: linear-gradient(120deg, rgba(197, 48, 48, 0.08), rgba(255, 255, 255, 0.6));
}

/* 预热 / 下载中的那一道流光，是「还在干活」的唯一动画，避免整块闪烁 */
.sk-dl-stage[data-state='warming']::after,
.sk-dl-stage[data-state='downloading']::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.55), transparent);
    transform: translateX(-100%);
    animation: skDlSweep 2.2s ease-in-out infinite;
    pointer-events: none;
}

@keyframes skDlSweep {
    to { transform: translateX(100%); }
}

.sk-dl-stage-main {
    display: flex;
    align-items: center;
    gap: var(--space-12);
    min-width: 0;
    flex: 1 1 320px;
}

.sk-dl-stage-icon {
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    flex: none;
    border-radius: var(--radius-12);
    font-size: var(--fs-17);
    background: #fff;
    border: 1px solid rgba(79, 107, 216, 0.18);
    box-shadow: 0 2px 8px rgba(23, 32, 71, 0.06);
}

.sk-dl-stage[data-state='ready'] .sk-dl-stage-icon { border-color: rgba(47, 158, 111, 0.3); }
.sk-dl-stage[data-state='downloading'] .sk-dl-stage-icon { border-color: rgba(139, 92, 246, 0.3); }

.sk-dl-stage-text {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    min-width: 0;
}

.sk-dl-stage-title {
    font-size: var(--fs-13);
    font-weight: 700;
    letter-spacing: -0.01em;
    color: #2d3352;
}

.sk-dl-stage[data-state='ready'] .sk-dl-stage-title { color: #227a55; }

.sk-dl-stage-sub {
    font-size: var(--fs-12);
    color: var(--text-secondary);
    line-height: var(--lh-ui);
}

.sk-dl-stage-side {
    display: flex;
    align-items: center;
    gap: var(--space-10);
    flex: none;
}

.sk-dl-meter {
    display: block;
    width: 132px;
    height: 6px;
    border-radius: var(--radius-pill);
    background: rgba(79, 107, 216, 0.14);
    overflow: hidden;
}

.sk-dl-meter-fill {
    display: block;
    height: 100%;
    border-radius: var(--radius-pill);
    background: linear-gradient(90deg, var(--sk-accent), var(--sk-violet));
    transition: width 0.5s ease;
}

.sk-dl-stage[data-state='ready'] .sk-dl-meter-fill {
    background: linear-gradient(90deg, #2f9e6f, #4bbd8c);
}

.sk-dl-meter-text {
    font-family: var(--sk-mono);
    font-size: var(--fs-11);
    color: #6b7390;
    white-space: nowrap;
}

/* 状态台右侧的刷新按钮：轻量描边，不抢主按钮的注意力 */
.sk-dl-refresh {
    display: inline-flex;
    align-items: center; gap: var(--space-4);
    font: inherit;
    font-size: var(--fs-11);
    padding: var(--space-4) var(--space-10);
    border-radius: var(--radius-pill);
    color: #4a5568;
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid rgba(79, 107, 216, 0.2);
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.16s ease;
}

.sk-dl-refresh:hover {
    color: var(--sk-accent-dark);
    border-color: rgba(79, 107, 216, 0.42);
    background: #fff;
    transform: translateY(-1px);
}

body.sk-dl-loading .sk-dl-refresh { pointer-events: none; opacity: 0.5; }

/* ---------- B. 四张下载卡 ---------- */
.sk-dl-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-12);
}

.sk-dl-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: flex-start; gap: var(--space-6);
    text-align: left; padding: var(--space-16) var(--space-16) var(--space-12) ;
    border-radius: var(--radius-16);
    border: 1px solid rgba(79, 107, 216, 0.16);
    background: #fff;
    cursor: pointer;
    font: inherit;
    color: inherit;
    transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
    overflow: hidden;
}

.sk-dl-card::before {
    content: '';
    position: absolute;
    inset: 0 0 auto 0;
    height: 2px;
    background: linear-gradient(90deg, var(--sk-accent), transparent 80%);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.sk-dl-card:hover {
    transform: translateY(-2px);
    border-color: rgba(79, 107, 216, 0.36);
    box-shadow: 0 12px 26px rgba(23, 32, 71, 0.10);
}

.sk-dl-card:hover::before { opacity: 1; }
.sk-dl-card:focus-visible { outline: 2px solid var(--sk-accent); outline-offset: 2px; }

.sk-dl-card--all {
    border-color: rgba(79, 107, 216, 0.42);
    background: linear-gradient(160deg, rgba(79, 107, 216, 0.09), rgba(255, 255, 255, 0.96) 62%);
}

.sk-dl-card--sp { background: linear-gradient(160deg, rgba(139, 92, 246, 0.08), #fff 62%); }
.sk-dl-card--sp:hover { border-color: rgba(139, 92, 246, 0.4); }
.sk-dl-card--sp::before { background: linear-gradient(90deg, var(--sk-violet), transparent 80%); }

.sk-dl-card--stage { background: linear-gradient(160deg, rgba(45, 160, 190, 0.07), #fff 62%); }

.sk-dl-card--pick { background: linear-gradient(160deg, rgba(74, 85, 104, 0.06), #fff 62%); }
.sk-dl-card--pick:hover { border-color: rgba(74, 85, 104, 0.34); }
.sk-dl-card--pick::before { background: linear-gradient(90deg, #4a5568, transparent 80%); }
.sk-dl-card--stage:hover { border-color: rgba(45, 160, 190, 0.38); }
.sk-dl-card--stage::before { background: linear-gradient(90deg, #2da0be, transparent 80%); }

.sk-dl-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-8);
    width: 100%;
}

.sk-dl-card-badge {
    font-family: var(--sk-mono);
    font-size: var(--fs-11);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: var(--space-2) var(--space-8);
    border-radius: var(--radius-pill);
    color: #fff;
    background: var(--sk-accent);
}

.sk-dl-card-badge--sp { background: var(--sk-violet); }
.sk-dl-card-badge--stage { background: #2da0be; }
.sk-dl-card-badge--pick { background: #4a5568; }

.sk-dl-card-count {
    font-family: var(--sk-mono);
    font-size: var(--fs-11);
    color: #8890a6;
    white-space: nowrap;
}

.sk-dl-card-title { font-size: var(--fs-15); font-weight: 700; letter-spacing: -0.01em; }
.sk-dl-card-desc { font-size: var(--fs-12); color: var(--text-secondary); line-height: var(--lh-ui); }
.sk-dl-card-desc b { color: var(--sk-accent-dark); }

.sk-dl-card-file {
    font-family: var(--sk-mono);
    font-size: var(--fs-11);
    color: #9aa1b6;
    padding: 1px 0 0;
    word-break: break-all;
}

.sk-dl-card-go {
    margin-top: auto;
    padding-top: var(--space-8);
    font-size: var(--fs-12);
    font-weight: 600;
    color: var(--sk-accent-dark);
    display: inline-flex;
    align-items: center; gap: var(--space-4);
}

.sk-dl-card-go i {
    font-style: normal;
    transition: transform 0.18s ease;
}

.sk-dl-card:hover .sk-dl-card-go i { transform: translateX(3px); }
.sk-dl-card.is-open .sk-dl-card-go { color: #2f855a; }
.sk-dl-card.is-open .sk-dl-card-go i { transform: none; }

body.sk-dl-loading .sk-dl-card { opacity: 0.7; pointer-events: none; }

/* ---------- C/D. 双面板（阶段 / 自选） ---------- */
.sk-dl-panel {
    padding: var(--space-16);
    border-radius: var(--radius-16);
    border: 1px dashed rgba(79, 107, 216, 0.28);
    background: rgba(250, 251, 255, 0.82);
    animation: skDlFade 0.22s ease both;
}

@keyframes skDlFade {
    from { opacity: 0; transform: translateY(-6px); }
}

.sk-dl-panel--stage {
    border-style: solid;
    border-color: rgba(45, 160, 190, 0.24);
    background: linear-gradient(180deg, rgba(45, 160, 190, 0.05), rgba(250, 251, 255, 0.6));
}

.sk-dl-panel-head {
    display: flex;
    align-items: baseline;
    gap: var(--space-10);
    flex-wrap: wrap;
    padding-bottom: var(--space-12); margin-bottom: var(--space-12);
    border-bottom: 1px solid rgba(79, 107, 216, 0.12);
}

.sk-dl-panel-title { font-size: var(--fs-13); font-weight: 700; color: #2d3352; }
.sk-dl-panel-hint { font-size: var(--fs-11); color: #8890a6; }

.sk-dl-stage-btns { display: flex; flex-wrap: wrap; gap: var(--space-6); }

.sk-dl-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--space-6);
    padding: var(--space-6) var(--space-12);
    font-size: var(--fs-12);
    font-family: inherit;
    color: #33395a;
    background: #fff;
    border: 1px solid rgba(79, 107, 216, 0.2);
    border-radius: var(--radius-pill);
    cursor: pointer;
    transition: all 0.16s ease;
}

.sk-dl-chip span {
    font-family: var(--sk-mono);
    font-size: var(--fs-11);
    color: #6b7390;
    background: rgba(79, 107, 216, 0.08);
    border-radius: var(--radius-pill);
    padding: 1px var(--space-6);
}

.sk-dl-chip:hover {
    color: #fff;
    background: var(--sk-accent);
    border-color: var(--sk-accent);
    transform: translateY(-1px);
    box-shadow: 0 5px 12px rgba(79, 107, 216, 0.26);
}

.sk-dl-chip:hover span { color: #fff; background: rgba(255, 255, 255, 0.22); }

.sk-dl-groups {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-12);
}

.sk-dl-group {
    border: 1px solid rgba(79, 107, 216, 0.12);
    border-radius: var(--radius-12);
    background: #fff;
    padding: var(--space-10) var(--space-12) var(--space-12);
}

.sk-dl-group--sp { border-color: rgba(139, 92, 246, 0.24); background: rgba(139, 92, 246, 0.04); }

.sk-dl-group-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-8); margin-bottom: var(--space-8);
}

.sk-dl-group-title { font-size: var(--fs-13); font-weight: 700; }
.sk-dl-group--sp .sk-dl-group-title { color: var(--sk-violet); }

.sk-dl-group-all {
    font-family: var(--sk-mono);
    font-size: var(--fs-11);
    padding: var(--space-2) var(--space-8);
    border-radius: var(--radius-pill);
    color: var(--sk-accent-dark);
    background: rgba(79, 107, 216, 0.08);
    border: 1px solid rgba(79, 107, 216, 0.18);
    cursor: pointer;
    transition: all 0.16s ease;
}

.sk-dl-group-all:hover { color: #fff; background: var(--sk-accent); border-color: var(--sk-accent); }
.sk-dl-group-all--sp { color: var(--sk-violet); background: rgba(139, 92, 246, 0.1); border-color: rgba(139, 92, 246, 0.22); }
.sk-dl-group-all--sp:hover { color: #fff; background: var(--sk-violet); border-color: var(--sk-violet); }

.sk-dl-group-items {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--space-4);
}

.sk-dl-item {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    width: 100%;
    padding: var(--space-6) var(--space-8);
    font: inherit;
    font-size: var(--fs-12);
    text-align: left;
    color: #2d3352;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-8);
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease;
}

.sk-dl-item:hover { background: rgba(79, 107, 216, 0.06); border-color: rgba(79, 107, 216, 0.18); }

.sk-dl-item-check {
    flex: none;
    width: 14px;
    height: 14px;
    border-radius: var(--radius-4);
    border: 1.5px solid rgba(79, 107, 216, 0.42);
    background: #fff;
    position: relative;
    transition: all 0.15s ease;
}

.sk-dl-item.is-picked .sk-dl-item-check {
    background: var(--sk-accent);
    border-color: var(--sk-accent);
}

.sk-dl-item.is-picked .sk-dl-item-check::after {
    content: '';
    position: absolute;
    left: var(--space-4);
    top: var(--space-2);
    width: 5px;
    height: 9px;
    border: solid #fff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.sk-dl-item-name {
    font-family: var(--sk-mono);
    font-size: var(--fs-11);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1 1 auto;
}

.sk-dl-item.is-picked .sk-dl-item-name { font-weight: 700; color: var(--sk-accent-dark); }

.sk-dl-item-repo {
    flex: none;
    font-size: var(--fs-11);
    color: #9aa1b6;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 44%;
}

.sk-dl-item.is-picked .sk-dl-item-repo { color: var(--sk-accent); }

/* ---------- E. 已选操作条 ---------- */
.sk-dl-bar {
    position: sticky;
    bottom: var(--space-12);
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-12);
    flex-wrap: wrap;
    padding: var(--space-10) var(--space-12);
    border-radius: var(--radius-12);
    background: linear-gradient(90deg, rgba(79, 107, 216, 0.14), rgba(139, 92, 246, 0.10));
    border: 1px solid rgba(79, 107, 216, 0.22);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
}

.sk-dl-bar-text { font-size: var(--fs-13); color: #2d3352; }
.sk-dl-bar-text b { font-family: var(--sk-mono); font-size: var(--fs-15); color: var(--sk-accent-dark); }
.sk-dl-bar-actions { display: flex; gap: var(--space-8); }

.sk-dl-bar-clear,
.sk-dl-bar-go {
    font: inherit;
    font-size: var(--fs-12);
    padding: var(--space-6) var(--space-16);
    border-radius: var(--radius-8);
    cursor: pointer;
    transition: all 0.16s ease;
}

.sk-dl-bar-clear {
    background: rgba(255, 255, 255, 0.7);
    color: #4a5568;
    border: 1px solid rgba(74, 85, 104, 0.26);
}

.sk-dl-bar-clear:hover { background: #fff; }

.sk-dl-bar-go {
    color: #fff;
    border: 1px solid transparent;
    background: linear-gradient(180deg, var(--sk-accent), var(--sk-accent-dark));
    box-shadow: 0 5px 14px rgba(79, 107, 216, 0.3);
}

.sk-dl-bar-go:hover { transform: translateY(-1px); box-shadow: 0 8px 18px rgba(79, 107, 216, 0.36); }

/* ---------- F. 说明清单 ---------- */
.sk-dl-notes {
    list-style: none;
    margin: 2px 0 0;
    padding: var(--space-12) var(--space-16);
    border-radius: var(--radius-12);
    background: rgba(79, 107, 216, 0.045);
    border-left: 3px solid var(--sk-accent);
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-6) var(--space-20);
}

.sk-dl-notes li {
    position: relative; padding-left: var(--space-16);
    font-size: var(--fs-12);
    color: var(--text-secondary);
    line-height: var(--lh-ui);
}

.sk-dl-notes li::before {
    content: '›';
    position: absolute;
    left: var(--space-2);
    color: var(--sk-accent);
    font-weight: 700;
}

.sk-dl-notes b { color: #2d3352; }

/* ---------- 矩阵行内 / superpowers 列表的行内下载按钮 ---------- */
.sk-dl-mini {
    display: inline-grid;
    place-items: center;
    width: 22px;
    height: 22px; margin-left: var(--space-6);
    vertical-align: middle;
    border-radius: var(--radius-6);
    border: 1px solid rgba(79, 107, 216, 0.28);
    background: rgba(79, 107, 216, 0.07);
    color: var(--sk-accent-dark);
    font-size: var(--fs-12);
    line-height: 1;
    cursor: pointer;
    transition: all 0.16s ease;
}

.sk-dl-mini:hover {
    color: #fff;
    background: var(--sk-accent);
    border-color: var(--sk-accent);
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(79, 107, 216, 0.3);
}

.sk-dl-mini--inline { margin-left: var(--space-6); }

body.sk-dl-loading .sk-dl-mini { pointer-events: none; opacity: 0.7; }

/* 下载中给行内按钮一个呼吸态，明确「正在取」 */
body.sk-dl-loading .sk-dl-mini { animation: skDlPulse 1.4s ease-in-out infinite; }

@keyframes skDlPulse {
    0%, 100% { opacity: 0.72; }
    50%      { opacity: 1; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1199px) {
    .sk-dl-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 1023px) {
    .sk-dl-notes { grid-template-columns: 1fr; }
}

@media (max-width: 767px) {
    .sk-dl { padding: var(--space-16) var(--space-12) ; border-radius: var(--radius-16); gap: var(--space-12); }
    .sk-dl-grid { grid-template-columns: 1fr; gap: var(--space-10); }
    .sk-dl-groups { grid-template-columns: 1fr; }
    .sk-dl-group-items { grid-template-columns: 1fr; }
    .sk-dl-panel { padding: var(--space-12) ; }
    .sk-dl-stage { padding: var(--space-12) ; }
    .sk-dl-stage-side { width: 100%; }
    .sk-dl-meter { flex: 1; width: auto; }
    .sk-dl-stage-icon { width: 32px; height: 32px; font-size: var(--fs-15); }
    .sk-dl-stage-title { font-size: var(--fs-13); }
    .sk-dl-bar { flex-direction: column; align-items: stretch; }
    .sk-dl-bar-actions { display: grid; grid-template-columns: 1fr 1.4fr; gap: var(--space-8); }
    .sk-dl-item-repo { max-width: 40%; }
    .sk-dl-mini { width: 26px; height: 26px; }
    .sk-dl-cta { width: 100%; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
    .sk-dl-card, .sk-dl-mini, .sk-dl-mini:hover, .sk-dl-chip:hover { transform: none; transition: none; }
    .sk-dl-stage::after { animation: none; opacity: 0; }
    .sk-dl-meter-fill { transition: none; }
    body.sk-dl-loading .sk-dl-mini { animation: none; }
}

/* 侧栏「本页速览」里的下载入口：序号位换成下载箭头 + 绿色渐变，与章节锚点区分 */
.page-skills .topic-pick-row--dl .topic-pick-idx {
    font-size: var(--fs-12);
    background: linear-gradient(135deg, #4f6bd8, #3b52ad);
    box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.35), 0 2px 8px rgba(59, 82, 173, 0.4);
}

.page-skills .topic-pick-row--dl .topic-pick-name { color: var(--sk-accent-dark); }
.page-skills .topic-pick-row--dl:hover .topic-pick-name { color: var(--sk-accent); }

/* 下载入口自带一条左侧亮线，鼠标扫过时更明确 */
.page-skills .topic-pick-row--dl::after { background: linear-gradient(90deg, #3b52ad, var(--sk-accent) 60%, transparent 92%); }