/* ==========================================================================
   jslet.com - Pinterest Gestalt 1:1 Complete Stylesheet
   ========================================================================== */
@charset "UTF-8";

/* --- 1. Gestalt Tokens --- */
:root {
    --sema-color-background-default: #FFFFFF;
    --sema-color-background-subtle: #EFEFEF;
    --sema-color-background-wash: #F7F7F7;
    --sema-color-border-decorative: #E9E9E9;
    --sema-color-border-interactive: #CDCDC7;
    
    --sema-color-text-default: #111111;
    --sema-color-text-subtle: #767676;
    --sema-color-text-inverse: #FFFFFF;
    --sema-color-brand-red: #E60023;
    --sema-color-brand-red-hover: #AD081B;
    
    --sema-color-status-green: #059669;
    --sema-color-status-blue: #003C96;
    
    --sema-rounding-sm: 8px;
    --sema-rounding-md: 16px;
    --sema-rounding-lg: 24px;
    --sema-rounding-pill: 9999px;
    
    --sema-shadow-card: 0 1px 3px rgba(0, 0, 0, 0.05);
    --sema-shadow-floating: 0 4px 16px rgba(0, 0, 0, 0.15);
}

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

body.pin-gestalt-body {
    background-color: var(--sema-color-background-default);
    color: var(--sema-color-text-default);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    -webkit-font-smoothing: antialiased;
    line-height: 1.5;
}

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

/* --- 2. 顶部吸顶导航栏 (Header) --- */
.gestalt-header {
    position: sticky;
    top: 0;
    height: 80px;
    background: var(--sema-color-background-default);
    border-bottom: 1px solid var(--sema-color-border-decorative);
    z-index: 671;
    display: flex;
    align-items: center;
    padding: 0 20px;
}

.gestalt-header-inner {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.gestalt-nav-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.gestalt-logo-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--sema-color-brand-red);
    transition: background-color 0.15s;
}

.gestalt-logo-btn:hover {
    background-color: var(--sema-color-background-subtle);
}

.gestalt-title-wrap {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: var(--sema-rounding-sm);
    transition: background-color 0.15s;
}

.gestalt-title-wrap:hover {
    background-color: var(--sema-color-background-subtle);
}

.gestalt-brand-text {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--sema-color-text-default);
}

.gestalt-dropdown-arrow {
    color: var(--sema-color-text-subtle);
}

.gestalt-account-pill {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px 6px 8px;
    background: var(--sema-color-background-subtle);
    border-radius: var(--sema-rounding-pill);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: background 0.15s;
}

.gestalt-account-pill:hover {
    background: #E2E2E2;
}

.gestalt-mini-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--sema-color-border-interactive);
    color: var(--sema-color-text-default);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 800;
}

.gestalt-pill-arrow {
    color: var(--sema-color-text-subtle);
}

/* 搜索胶囊 */
.gestalt-search-container {
    flex: 1;
    max-width: 720px;
}

.gestalt-search-bar {
    display: flex;
    align-items: center;
    background: var(--sema-color-background-subtle);
    border-radius: var(--sema-rounding-pill);
    padding: 0 16px;
    height: 48px;
    transition: all 0.15s;
}

.gestalt-search-bar:focus-within {
    background: var(--sema-color-background-default);
    box-shadow: 0 0 0 4px rgba(0, 132, 255, 0.2);
    border: 1px solid var(--sema-color-border-interactive);
}

.gestalt-search-icon {
    color: var(--sema-color-text-subtle);
    margin-right: 10px;
}

.gestalt-search-bar input {
    width: 100%;
    border: none;
    background: transparent;
    font-size: 0.95rem;
    color: var(--sema-color-text-default);
    outline: none;
}

/* 右侧图标 */
.gestalt-nav-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.gestalt-icon-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--sema-color-text-subtle);
    transition: all 0.15s;
}

.gestalt-icon-btn:hover {
    background: var(--sema-color-background-subtle);
    color: var(--sema-color-text-default);
}

.gestalt-profile-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gestalt-profile-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--sema-color-background-subtle);
    border: 1px solid var(--sema-color-border-decorative);
    color: var(--sema-color-text-default);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
}

/* --- 3. 主体内容布局 --- */
.gestalt-app-content {
    background: var(--sema-color-background-default);
    min-height: calc(100vh - 80px);
}

.gestalt-center-container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 32px 24px 64px;
}

/* Profile Header */
.gestalt-profile-header {
    margin-bottom: 32px;
}

.gestalt-header-flex {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.gestalt-main-avatar {
    width: 68px;
    height: 68px;
    border-radius: 50%;
    background: var(--sema-color-background-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
}

.gestalt-avatar-inner {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--sema-color-text-default);
}

.gestalt-header-details {
    flex: 1;
}

.gestalt-user-title {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 4px;
    letter-spacing: -0.5px;
}

.gestalt-user-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.92rem;
    color: var(--sema-color-text-subtle);
    font-weight: 500;
}

.gestalt-meta-dot {
    color: var(--sema-color-text-subtle);
}

.gestalt-meta-link {
    color: var(--sema-color-text-default);
    font-weight: 600;
}

.gestalt-verified-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--sema-color-status-blue);
    font-weight: 600;
}

.gestalt-badge-score {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
}

.gestalt-score-label {
    font-size: 0.8rem;
    color: var(--sema-color-text-subtle);
    font-weight: 600;
}

.gestalt-score-val {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--sema-color-status-green);
    background: rgba(5, 150, 105, 0.08);
    padding: 6px 14px;
    border-radius: var(--sema-rounding-pill);
}

/* --- 4. 大卡片框 (Gestalt Box Section) --- */
.gestalt-card-section {
    margin-bottom: 48px;
}

.gestalt-section-intro h2 {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 4px;
}

.gestalt-section-intro p {
    font-size: 0.95rem;
    color: var(--sema-color-text-subtle);
    margin-bottom: 18px;
}

.gestalt-box-container {
    border: 1px solid var(--sema-color-border-decorative);
    border-radius: var(--sema-rounding-lg);
    padding: 24px;
    background: var(--sema-color-background-default);
    box-shadow: var(--sema-shadow-card);
}

.gestalt-box-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.gestalt-box-top h3 {
    font-size: 1.25rem;
    font-weight: 800;
}

.gestalt-top-buttons {
    display: flex;
    gap: 10px;
}

.gestalt-btn-pill {
    padding: 10px 20px;
    border-radius: var(--sema-rounding-pill);
    background: var(--sema-color-background-subtle);
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--sema-color-text-default);
    transition: background 0.15s;
}

.gestalt-btn-pill:hover {
    background: #E2E2E2;
}

/* 双列数据卡片 */
.gestalt-double-card-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

@media (max-width: 800px) {
    .gestalt-double-card-row {
        grid-template-columns: 1fr;
    }
}

.gestalt-inner-data-card {
    border: 1px solid var(--sema-color-border-decorative);
    border-radius: var(--sema-rounding-md);
    padding: 20px;
}

.gestalt-inner-data-card h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.gestalt-stats-list-wrap {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.gestalt-stat-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    background: var(--sema-color-background-wash);
    border-radius: var(--sema-rounding-sm);
}

.gestalt-stat-name {
    font-size: 0.92rem;
    font-weight: 600;
}

.gestalt-stat-value {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--sema-color-status-blue);
    font-family: "SF Mono", Consolas, monospace;
}

/* 趋势项列表 */
.gestalt-trend-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.gestalt-trend-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 10px 14px;
    background: var(--sema-color-background-wash);
    border-radius: var(--sema-rounding-sm);
    transition: background 0.15s;
}

.gestalt-trend-item:hover {
    background: var(--sema-color-background-subtle);
}

.gestalt-trend-thumb {
    width: 48px;
    height: 48px;
    border-radius: var(--sema-rounding-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFFFFF;
    font-weight: 800;
    font-size: 0.8rem;
}

.gestalt-trend-name {
    flex: 1;
    font-size: 0.92rem;
    font-weight: 700;
}

.gestalt-trend-grow {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--sema-color-status-green);
    font-size: 0.9rem;
    font-family: "SF Mono", Consolas, monospace;
}

/* --- 5. 课程/资源 4 列网格 (Gestalt Course Grid) --- */
.gestalt-course-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

@media (max-width: 1024px) {
    .gestalt-course-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .gestalt-course-grid {
        grid-template-columns: 1fr;
    }
}

.gestalt-course-card {
    border: 1px solid var(--sema-color-border-decorative);
    border-radius: var(--sema-rounding-lg);
    overflow: hidden;
    background: var(--sema-color-background-default);
    transition: transform 0.2s cubic-bezier(0.2, 0, 0, 1), box-shadow 0.2s;
}

.gestalt-course-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.08);
}

.gestalt-course-cover {
    height: 180px;
    padding: 16px;
    display: flex;
    align-items: flex-end;
}

.gestalt-cover-tag {
    background: rgba(255, 255, 255, 0.95);
    padding: 4px 10px;
    border-radius: var(--sema-rounding-pill);
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--sema-color-text-default);
}

.gestalt-course-body {
    padding: 18px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 120px;
}

.gestalt-course-body h3 {
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 12px;
}

.gestalt-course-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.gestalt-time-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--sema-color-text-subtle);
}

.gestalt-circle-arrow {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--sema-color-background-subtle);
    color: var(--sema-color-text-default);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
}

.gestalt-course-card:hover .gestalt-circle-arrow {
    background: var(--sema-color-brand-red);
    color: #FFFFFF;
}

/* --- 6. 底部 Footer Box (1:1 复刻) --- */
.gestalt-footer-box {
    border: 1px solid var(--sema-color-border-decorative);
    border-radius: var(--sema-rounding-lg);
    background: var(--sema-color-background-subtle);
    padding: 32px;
    margin-top: 48px;
}

.gestalt-footer-inner {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.gestalt-footer-top h3 {
    font-size: 1.15rem;
    font-weight: 800;
    margin-bottom: 4px;
}

.gestalt-footer-top p {
    font-size: 0.92rem;
    color: var(--sema-color-text-subtle);
}

.gestalt-footer-top a {
    color: var(--sema-color-text-default);
    font-weight: 700;
    text-decoration: underline;
}

.gestalt-footer-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

@media (max-width: 700px) {
    .gestalt-footer-features {
        grid-template-columns: 1fr;
    }
}

.gestalt-feature-col {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.gestalt-feat-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--sema-color-background-default);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--sema-color-text-subtle);
    flex-shrink: 0;
}

.gestalt-feat-text {
    display: flex;
    flex-direction: column;
    font-size: 0.88rem;
}

.gestalt-feat-text strong {
    font-weight: 700;
    margin-bottom: 2px;
}

.gestalt-feat-text span {
    color: var(--sema-color-text-subtle);
}

.gestalt-feat-text a {
    color: var(--sema-color-brand-red);
    font-weight: 600;
}

.gestalt-copyright-line {
    border-top: 1px solid var(--sema-color-border-decorative);
    padding-top: 18px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--sema-color-text-subtle);
}

/* --- 7. 右下角悬浮按钮 (Floating FAB) --- */
.gestalt-floating-fab {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 672;
}

.gestalt-fab-circle {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--sema-color-background-default);
    color: var(--sema-color-text-default);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--sema-shadow-floating);
    transition: transform 0.15s, background-color 0.15s;
}

.gestalt-fab-circle:hover {
    transform: scale(1.05);
    background-color: var(--sema-color-background-wash);
}

/* ═══ 企业中心分类目录下拉 (Pinterest Business Hub 风格) ═══ */
.gestalt-title-wrap.gestalt-dropdown {
    position: relative;
    display: flex;
    align-items: center;
}

.gestalt-brand-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: none;
    padding: 6px 10px;
    border-radius: 16px;
    cursor: pointer;
    font-family: inherit;
    color: var(--sema-color-text-default, #111111);
    transition: background-color 0.15s;
}
.gestalt-brand-btn:hover {
    background: var(--sema-color-background-subtle, #f0f0f0);
}
.gestalt-brand-text {
    font-size: 15px;
    font-weight: 600;
    color: var(--sema-color-text-default, #111111);
    text-decoration: none;
}
.gestalt-dropdown-arrow {
    color: var(--sema-color-text-subtle, #5f5f5f);
    transition: transform 0.2s ease;
}
.gestalt-hub-open .gestalt-dropdown-arrow {
    transform: rotate(180deg);
}

/* 下拉面板 */
.gestalt-hub-panel {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    min-width: 560px;
    max-width: 90vw;
    background: #ffffff;
    border-radius: 24px;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.14);
    border: 1px solid #efefef;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
    z-index: 999;
}
.gestalt-hub-open .gestalt-hub-panel {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* 面板头部 */
.gestalt-hub-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    padding: 0 4px 12px;
    border-bottom: 1px solid #f0f0f0;
    margin-bottom: 14px;
}
.gestalt-hub-title {
    font-size: 15px;
    font-weight: 700;
    color: #111111;
}
.gestalt-hub-count {
    font-size: 12px;
    color: var(--pin-red, #E60023);
    font-weight: 600;
}

/* 分类网格 (2 列) */
.gestalt-hub-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
}
.gestalt-hub-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 16px;
    text-decoration: none;
    transition: background-color 0.15s;
}
.gestalt-hub-item:hover {
    background: #f7f7f8;
}

/* 分类图标 (彩色圆角块) */
.gestalt-hub-icon {
    width: 40px;
    height: 40px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    font-weight: 800;
    color: #ffffff;
    flex-shrink: 0;
    font-family: -apple-system, 'Inter', 'Segoe UI', Roboto, sans-serif;
}
.gic-json    { background: linear-gradient(135deg, #a78bfa, #7c3aed); }
.gic-regex   { background: linear-gradient(135deg, #60a5fa, #2563eb); }
.gic-encoding{ background: linear-gradient(135deg, #2dd4bf, #0d9488); }
.gic-time    { background: linear-gradient(135deg, #818cf8, #4f46e5); }
.gic-css     { background: linear-gradient(135deg, #f472b6, #db2777); }
.gic-dev     { background: linear-gradient(135deg, #fb923c, #ea580c); }
.gic-core    { background: linear-gradient(135deg, #4ade80, #16a34a); }
.gic-ai      { background: linear-gradient(135deg, #fb7185, #e11d48); }
.gic-data    { background: linear-gradient(135deg, #34d399, #059669); }
.gic-net     { background: linear-gradient(135deg, #38bdf8, #0284c7); }
.gic-cloud   { background: linear-gradient(135deg, #c084fc, #9333ea); }
.gic-decision{ background: linear-gradient(135deg, #fbbf24, #d97706); }
.gic-sec     { background: linear-gradient(135deg, #94a3b8, #475569); }
.gic-ops     { background: linear-gradient(135deg, #22d3ee, #0891b2); }

/* 分类文字 */
.gestalt-hub-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}
.gestalt-hub-info strong {
    font-size: 13.5px;
    font-weight: 600;
    color: #111111;
}
.gestalt-hub-info span {
    font-size: 12px;
    color: #8a8a8a;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 底部全部链接 */
.gestalt-hub-all {
    display: block;
    margin-top: 14px;
    padding: 12px 14px;
    border-radius: 14px;
    background: var(--pin-red, #E60023);
    color: #ffffff;
    text-align: center;
    font-size: 13px;
    font-weight: 700;
    text-decoration: none;
    transition: background-color 0.15s;
}
.gestalt-hub-all:hover {
    background: #c4001f;
}

/* 移动端: 面板全宽 */
@media (max-width: 720px) {
    .gestalt-hub-panel {
        min-width: 0;
        width: calc(100vw - 32px);
        left: 0;
    }
    .gestalt-hub-grid {
        grid-template-columns: 1fr;
    }
}


/* ═══ 企业中心分类目录下拉 (Pinterest Business Hub 风格) ═══ */
.gestalt-title-wrap.gestalt-dropdown {
    position: relative;
    display: flex;
    align-items: center;
}

.gestalt-brand-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: none;
    padding: 6px 10px;
    border-radius: 16px;
    cursor: pointer;
    font-family: inherit;
    color: var(--sema-color-text-default, #111111);
    transition: background-color 0.15s;
}
.gestalt-brand-btn:hover {
    background: var(--sema-color-background-subtle, #f0f0f0);
}
.gestalt-brand-text {
    font-size: 15px;
    font-weight: 600;
    color: var(--sema-color-text-default, #111111);
    text-decoration: none;
}
.gestalt-dropdown-arrow {
    color: var(--sema-color-text-subtle, #5f5f5f);
    transition: transform 0.2s ease;
}
.gestalt-hub-open .gestalt-dropdown-arrow {
    transform: rotate(180deg);
}

/* 下拉面板 */
.gestalt-hub-panel {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    min-width: 560px;
    max-width: 90vw;
    background: #ffffff;
    border-radius: 24px;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.14);
    border: 1px solid #efefef;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
    z-index: 999;
}
.gestalt-hub-open .gestalt-hub-panel {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* 面板头部 */
.gestalt-hub-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    padding: 0 4px 12px;
    border-bottom: 1px solid #f0f0f0;
    margin-bottom: 14px;
}
.gestalt-hub-title {
    font-size: 15px;
    font-weight: 700;
    color: #111111;
}
.gestalt-hub-count {
    font-size: 12px;
    color: var(--pin-red, #E60023);
    font-weight: 600;
}

/* 分类网格 (2 列) */
.gestalt-hub-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
}
.gestalt-hub-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 16px;
    text-decoration: none;
    transition: background-color 0.15s;
}
.gestalt-hub-item:hover {
    background: #f7f7f8;
}

/* 分类图标 (彩色圆角块) */
.gestalt-hub-icon {
    width: 40px;
    height: 40px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    font-weight: 800;
    color: #ffffff;
    flex-shrink: 0;
    font-family: -apple-system, 'Inter', 'Segoe UI', Roboto, sans-serif;
}
.gic-json    { background: linear-gradient(135deg, #a78bfa, #7c3aed); }
.gic-regex   { background: linear-gradient(135deg, #60a5fa, #2563eb); }
.gic-encoding{ background: linear-gradient(135deg, #2dd4bf, #0d9488); }
.gic-time    { background: linear-gradient(135deg, #818cf8, #4f46e5); }
.gic-css     { background: linear-gradient(135deg, #f472b6, #db2777); }
.gic-dev     { background: linear-gradient(135deg, #fb923c, #ea580c); }
.gic-core    { background: linear-gradient(135deg, #4ade80, #16a34a); }
.gic-ai      { background: linear-gradient(135deg, #fb7185, #e11d48); }
.gic-data    { background: linear-gradient(135deg, #34d399, #059669); }
.gic-net     { background: linear-gradient(135deg, #38bdf8, #0284c7); }
.gic-cloud   { background: linear-gradient(135deg, #c084fc, #9333ea); }
.gic-decision{ background: linear-gradient(135deg, #fbbf24, #d97706); }
.gic-sec     { background: linear-gradient(135deg, #94a3b8, #475569); }
.gic-ops     { background: linear-gradient(135deg, #22d3ee, #0891b2); }

/* 分类文字 */
.gestalt-hub-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}
.gestalt-hub-info strong {
    font-size: 13.5px;
    font-weight: 600;
    color: #111111;
}
.gestalt-hub-info span {
    font-size: 12px;
    color: #8a8a8a;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 底部全部链接 */
.gestalt-hub-all {
    display: block;
    margin-top: 14px;
    padding: 12px 14px;
    border-radius: 14px;
    background: var(--pin-red, #E60023);
    color: #ffffff;
    text-align: center;
    font-size: 13px;
    font-weight: 700;
    text-decoration: none;
    transition: background-color 0.15s;
}
.gestalt-hub-all:hover {
    background: #c4001f;
}

/* 移动端: 面板全宽 */
@media (max-width: 720px) {
    .gestalt-hub-panel {
        min-width: 0;
        width: calc(100vw - 32px);
        left: 0;
    }
    .gestalt-hub-grid {
        grid-template-columns: 1fr;
    }
}


/* ═══ 页脚多列导航 (Pinterest Business Hub Footer 风格) ═══ */
.gestalt-footer-nav-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 40px;
    padding: 28px 0 8px;
    border-top: 1px solid var(--sema-color-border-decorative, #efefef);
}
.gestalt-footer-nav-col h4 {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.4px;
    text-transform: uppercase;
    color: var(--sema-color-text-subtle, #6b6b6b);
    margin: 0 0 14px;
}
.gestalt-footer-nav-col ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.gestalt-footer-nav-col ul li {
    margin: 0;
}
.gestalt-footer-nav-col ul a {
    font-size: 14px;
    font-weight: 500;
    color: var(--sema-color-text-default, #111111);
    text-decoration: none;
    transition: color 0.15s;
}
.gestalt-footer-nav-col ul a:hover {
    color: var(--pin-red, #E60023);
}

/* 移动端: 2 列 → 1 列 */
@media (max-width: 900px) {
    .gestalt-footer-nav-grid {
        grid-template-columns: 1fr 1fr;
        gap: 28px;
    }
    .gestalt-footer-brand {
        grid-column: 1 / -1;
        padding-bottom: 8px;
    }
}
@media (max-width: 560px) {
    .gestalt-footer-nav-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}


/* ═══ 工具分类目录常驻区块 (首页主体, Pinterest 风格) ═══ */
.gestalt-cats-eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    color: var(--pin-red, #E60023);
    background: rgba(230, 0, 35, 0.08);
    border-radius: 999px;
    padding: 4px 12px;
    margin-bottom: 10px;
}

.gestalt-cats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    margin-top: 4px;
}

.gestalt-cat-card {
    display: flex;
    align-items: center;
    gap: 12px;
    background: #ffffff;
    border: 1px solid #efefef;
    border-radius: 18px;
    padding: 14px 16px;
    text-decoration: none;
    transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.gestalt-cat-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.10);
    border-color: transparent;
}

/* 分类图标: 复用 gic-* 渐变, 常驻区块用稍大尺寸 */
.gestalt-cat-icon {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 800;
    color: #ffffff;
    flex-shrink: 0;
    font-family: -apple-system, 'Inter', 'Segoe UI', Roboto, sans-serif;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.gestalt-cat-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.gestalt-cat-info strong {
    font-size: 14px;
    font-weight: 600;
    color: #111111;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.gestalt-cat-info span {
    font-size: 12px;
    color: #8a8a8a;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 查看全部按钮容器: 居中 */
.gestalt-cats-all-wrap {
    margin-top: 20px;
    text-align: center;
}

.gestalt-cats-all-wrap .gestalt-hub-all {
    display: inline-block;
    min-width: 240px;
}

/* 响应式: 平板 3 列 → 手机 2 列 → 窄屏 1 列 */
@media (max-width: 1100px) {
    .gestalt-cats-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 820px) {
    .gestalt-cats-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
    .gestalt-cats-grid { grid-template-columns: 1fr; }
    .gestalt-cat-card { padding: 12px 14px; }
}


/* ═══ 页脚品牌区 (品牌 + 简介 + 得分徽章) ═══ */
.gestalt-footer-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding-right: 16px;
}

.gestalt-footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: #111111;
    font-weight: 800;
    font-size: 1.05rem;
}

.gestalt-footer-logo .gestalt-pin-red {
    color: #E60023;
}

.gestalt-footer-tagline {
    font-size: 13px;
    line-height: 1.6;
    color: #6b6b6b;
    margin: 0;
    max-width: 300px;
}

.gestalt-footer-score {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    color: #059669;
    background: rgba(5, 150, 105, 0.08);
    border-radius: 999px;
    padding: 6px 12px;
}


/* ══════════════════════════════════════════════════════════════
   子页面主题层 (Subpage Theme) — 2026-08-27
   Pinterest 白底 + #E60023 红强调，与首页 gestalt 统一
   ══════════════════════════════════════════════════════════════ */

/* ── 1. 设计变量 (子页面工具页内联样式全部依赖这些) ── */
:root {
    /* 强调色: Pinterest 红 */
    --accent: #E60023;
    --accent-hover: #c4001f;
    --accent-soft: rgba(230, 0, 35, 0.08);
    --accent-glow: rgba(230, 0, 35, 0.22);
    --accent-ink: #ffffff;
    --accent-text: #E60023;

    /* 文本 */
    --text-heading: #111111;
    --text-body: #2b2b2b;
    --text-secondary: #5f5f5f;
    --text-muted: #8a8a8a;
    --text-tertiary: #a0a0a0;

    /* 背景 */
    --bg-body: #f4f4f4;
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --bg-footer: #111111;
    --bg-footer-bottom: #0a0a0a;
    --bg-tertiary: #efefef;

    /* 边框 */
    --border: #e6e6e6;
    --border-light: #f0f0f0;

    /* 状态色 */
    --success: #059669;
    --success-bg: rgba(5, 150, 105, 0.08);
    --success-soft: rgba(5, 150, 105, 0.10);
    --error: #dc2626;
    --error-bg: rgba(220, 38, 38, 0.08);
    --error-glow: rgba(220, 38, 38, 0.22);
    --warning: #d97706;
    --gold: #b45309;
    --gold-soft: rgba(180, 83, 9, 0.08);
    --green: #059669;
    --green-soft: rgba(5, 150, 105, 0.08);
    --navy: #1e3a5f;

    /* 圆角 / 阴影 */
    --radius-sm: 8px;
    --radius: 12px;
    --radius-md: 16px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.10);

    /* 字体 */
    --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-head: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* ── 2. 基础排版 ── */
body:not(.pin-gestalt-body) {
    background: var(--bg-body);
    color: var(--text-body);
    font-family: var(--font-body);
    line-height: 1.6;
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

body:not(.pin-gestalt-body) a { color: var(--accent-text); text-decoration: none; }
body:not(.pin-gestalt-body) a:hover { color: var(--accent-hover); }

/* 深色模式适配 (nav.js 的 btn-theme 切换) */
[data-theme="dark"] {
    --accent: #ff4d6a;
    --accent-hover: #ff6b84;
    --accent-soft: rgba(255, 77, 106, 0.14);
    --accent-glow: rgba(255, 77, 106, 0.30);
    --accent-text: #ff4d6a;
    --text-heading: #f0f0f0;
    --text-body: #d0d0d0;
    --text-secondary: #a0a0a0;
    --text-muted: #7a7a7a;
    --bg-body: #131313;
    --bg-card: #1e1e1e;
    --bg-input: #242424;
    --bg-footer: #0c0c0c;
    --border: #333333;
    --border-light: #2a2a2a;
}

/* ── 3. 顶部工具条 top-bar ── */
.top-bar {
    background: #111111;
    color: rgba(255, 255, 255, 0.85);
    font-size: 12.5px;
    padding: 6px 0;
}
.top-bar-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 18px;
}
.tb-item { display: inline-flex; align-items: center; gap: 6px; }
.tb-dot { color: #E60023; font-size: 8px; }
.tb-right { margin-left: auto; color: rgba(255, 255, 255, 0.55); }

/* ── 4. 主导航 site-nav ── */
.site-nav {
    background: #ffffff;
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    min-height: 64px;
    gap: 8px;
}
.nav-brand {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 800;
    font-size: 1.1rem;
    color: var(--text-heading);
    text-decoration: none;
}
.nav-brand:hover { color: var(--accent); }
.nav-logo-icon { flex-shrink: 0; }
.nav-links {
    display: flex;
    align-items: center;
    gap: 2px;
    margin-left: 16px;
    flex-wrap: wrap;
}
.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-body);
    text-decoration: none;
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    transition: background-color 0.15s, color 0.15s;
}
.nav-link:hover { background: var(--accent-soft); color: var(--accent); }
.nav-link.__nav-home__,
.nav-link.__nav-articles__,
.nav-link.__nav-about__ { /* active states set by nav.js via class */ }
.nav-arrow { font-size: 10px; color: var(--text-muted); }

/* 下拉 */
.nav-dropdown-wrap { position: relative; }
.nav-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 220px;
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.14);
    border: 1px solid var(--border-light);
    padding: 8px;
    display: none;
    z-index: 200;
}
.nav-dropdown-wrap:hover .nav-dropdown,
.nav-dropdown-wrap:focus-within .nav-dropdown { display: block; }
.nav-dropdown a {
    display: block;
    padding: 9px 14px;
    border-radius: 10px;
    font-size: 13.5px;
    color: var(--text-body);
    text-decoration: none;
    transition: background-color 0.12s;
}
.nav-dropdown a:hover { background: var(--accent-soft); color: var(--accent); }

/* 右侧动作 */
.nav-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 10px;
}
.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 18px;
    border-radius: 999px;
    background: var(--accent);
    color: #fff;
    font-size: 13.5px;
    font-weight: 600;
    text-decoration: none;
    transition: background-color 0.15s;
}
.nav-cta:hover { background: var(--accent-hover); color: #fff; }
.btn-theme {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-body);
    cursor: pointer;
    font-size: 15px;
    transition: background-color 0.15s;
}
.btn-theme:hover { background: var(--accent-soft); }

/* 跳过链接 */
.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--accent);
    color: #fff;
    padding: 8px 16px;
    border-radius: 0 0 8px 0;
    z-index: 9999;
}
.skip-link:focus { left: 0; }

/* ── 5. 主容器与页脚撑开布局 ── */
body:not(.pin-gestalt-body) #main-content { flex: 1 0 auto; }
.container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 32px 24px 56px;
}

/* ── 6. 页脚 site-footer ── */
.site-footer {
    background: var(--bg-footer);
    color: rgba(255, 255, 255, 0.75);
    padding: 48px 24px 0;
    margin-top: 48px;
}
.footer-main {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 40px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}
.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
}
.footer-logo-icon { flex-shrink: 0; }
.footer-name {
    font-size: 1.05rem;
    font-weight: 800;
    color: #fff;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.footer-desc {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.55);
    max-width: 320px;
    line-height: 1.6;
}
.footer-heading {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.6px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.45);
    margin: 0 0 14px;
}
.footer-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 9px;
}
.footer-links a {
    font-size: 13.5px;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.15s;
}
.footer-links a:hover { color: #fff; }
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    padding: 20px 0 24px;
    max-width: 1400px;
    margin: 0 auto;
    font-size: 12.5px;
    color: rgba(255, 255, 255, 0.45);
    text-align: center;
}
.footer-bottom a { color: rgba(255, 255, 255, 0.6); }
.footer-bottom a:hover { color: #fff; }

/* ── 7. 通用组件 (按钮/卡片/表单) ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 24px;
    border-radius: 999px;
    background: var(--accent);
    color: #fff;
    border: none;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    font-family: inherit;
    transition: background-color 0.15s, transform 0.12s;
}
.btn:hover { background: var(--accent-hover); color: #fff; transform: translateY(-1px); }
.btn-outline {
    background: transparent;
    border: 1.5px solid var(--accent);
    color: var(--accent);
}
.btn-outline:hover { background: var(--accent-soft); color: var(--accent); }

/* 输入框 */
body:not(.pin-gestalt-body) input, body:not(.pin-gestalt-body) select, body:not(.pin-gestalt-body) textarea {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-body);
    font-family: inherit;
    padding: 9px 14px;
    font-size: 14px;
}
body:not(.pin-gestalt-body) input:focus, body:not(.pin-gestalt-body) select:focus, body:not(.pin-gestalt-body) textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

/* 表格 */
body:not(.pin-gestalt-body) table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
}
body:not(.pin-gestalt-body) th, body:not(.pin-gestalt-body) td {
    padding: 11px 16px;
    border-bottom: 1px solid var(--border-light);
    font-size: 14px;
    text-align: left;
}
body:not(.pin-gestalt-body) th { background: var(--bg-tertiary); font-weight: 700; color: var(--text-heading); }
body:not(.pin-gestalt-body) tr:hover td { background: var(--accent-soft); }
.table-scroll { overflow-x: auto; }

/* SEO 区块 */
.seo-section {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 20px;
    padding: 28px 32px;
    margin-top: 28px;
}
.seo-section h2 {
    font-size: 1.4rem;
    color: var(--text-heading);
    margin-top: 0;
}
.seo-section h3 { color: var(--text-heading); font-size: 1.1rem; }
.seo-section p, .seo-section li { color: var(--text-body); font-size: 0.95rem; line-height: 1.7; }

/* FAQ 折叠 */
.faq-item { border-bottom: 1px solid var(--border-light); }
.faq-item:last-child { border-bottom: none; }
.faq-item summary {
    cursor: pointer;
    padding: 14px 4px;
    font-weight: 600;
    color: var(--text-heading);
    font-size: 15px;
}
.faq-item summary:hover { color: var(--accent); }
.faq-item p { color: var(--text-secondary); font-size: 0.92rem; padding: 0 4px 14px; margin: 0; }

/* 指标卡片 */
.metric-tile {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    padding: 18px 20px;
    text-align: center;
}
.metric-val { font-size: 1.5rem; font-weight: 800; color: var(--accent); }
.metric-label { font-size: 0.8rem; color: var(--text-muted); margin-top: 4px; }

/* 工具卡片 (分类页) */
.calculator-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 18px;
    padding: 20px 22px;
    text-decoration: none;
    display: block;
    transition: transform 0.18s, box-shadow 0.18s;
}
.calculator-card:hover { transform: translateY(-3px); box-shadow: 0 10px 24px rgba(0, 0, 0, 0.10); }
.card-desc { color: var(--text-secondary); font-size: 0.88rem; line-height: 1.55; }
.detail-link { color: var(--accent); font-weight: 600; font-size: 0.85rem; }

/* 相关工具 */
.related-tools { margin-top: 32px; }
.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 14px;
}

/* 矩阵网格 (分类页) */
.matrix-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
}

/* 分享按钮 */
.share-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-body);
    font-size: 13px;
    cursor: pointer;
    transition: border-color 0.15s, color 0.15s;
}
.share-btn:hover { border-color: var(--accent); color: var(--accent); }

/* 工具页常用表单组 */
.input-group { margin-bottom: 14px; }
.input-group label { display: block; font-weight: 700; font-size: 0.88rem; margin-bottom: 6px; color: var(--text-body); }
.unit-input { display: flex; align-items: center; gap: 8px; }
.unit-input select { min-width: 90px; }
.multi-input-row { display: flex; gap: 12px; flex-wrap: wrap; }
.num { font-variant-numeric: tabular-nums; }

/* 响应式 */
@media (max-width: 900px) {
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
    .nav-links { gap: 0; }
    .nav-link { padding: 8px 10px; font-size: 13px; }
}
@media (max-width: 640px) {
    .footer-grid { grid-template-columns: 1fr; }
    .top-bar-inner { gap: 8px; font-size: 11.5px; }
    .tb-right { display: none; }
    .container { padding: 24px 16px 48px; }
    .seo-section { padding: 20px 18px; }
}


/* ═══ 首页 Dark 模式 (gestalt 暗色适配, 与子页面统一) ═══ */
[data-theme="dark"] {
    --sema-color-background-default: #191919;
    --sema-color-background-subtle: #242424;
    --sema-color-background-wash: #1e1e1e;
    --sema-color-border-decorative: #333333;
    --sema-color-border-interactive: #444444;
    --sema-color-text-default: #f0f0f0;
    --sema-color-text-subtle: #a0a0a0;
    --sema-color-text-inverse: #111111;
    --sema-color-brand-red: #ff4d6a;
    --sema-color-brand-red-hover: #ff6b84;
    --sema-color-status-green: #34d399;
    --sema-color-status-blue: #60a5fa;
}

[data-theme="dark"] .gestalt-header {
    background: #191919;
    border-bottom-color: #333333;
}
[data-theme="dark"] .gestalt-search-bar {
    background: #242424;
}
[data-theme="dark"] .gestalt-hub-panel,
[data-theme="dark"] .gestalt-cat-card,
[data-theme="dark"] .gestalt-footer-nav-grid,
[data-theme="dark"] .gestalt-cats-all-wrap .gestalt-hub-all {
    background: #242424;
}
[data-theme="dark"] .gestalt-cat-card {
    border-color: #333333;
}
[data-theme="dark"] .gestalt-cat-card:hover {
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.5);
}
[data-theme="dark"] .gestalt-cat-info strong,
[data-theme="dark"] .gestalt-cat-info span,
[data-theme="dark"] .gestalt-footer-nav-col ul a,
[data-theme="dark"] .gestalt-footer-nav-col h4 {
    color: #e0e0e0;
}
[data-theme="dark"] .gestalt-footer-nav-col ul a:hover {
    color: var(--sema-color-brand-red);
}
[data-theme="dark"] .gestalt-box-container,
[data-theme="dark"] .gestalt-inner-data-card {
    background: #1e1e1e;
    border-color: #333333;
}
[data-theme="dark"] .gestalt-course-card {
    background: #1e1e1e;
    border-color: #333333;
}
[data-theme="dark"] .gestalt-course-body h3,
[data-theme="dark"] .gestalt-trend-name,
[data-theme="dark"] .gestalt-stat-name,
[data-theme="dark"] .gestalt-stat-value {
    color: #e0e0e0;
}
[data-theme="dark"] .gestalt-footer-box {
    background: #1a1a1a;
    border-color: #333333;
}
[data-theme="dark"] .gestalt-footer-top h3,
[data-theme="dark"] .gestalt-footer-top p,
[data-theme="dark"] .gestalt-feat-text strong,
[data-theme="dark"] .gestalt-feat-text span {
    color: #e0e0e0;
}
[data-theme="dark"] .gestalt-footer-top a,
[data-theme="dark"] .gestalt-feat-text a {
    color: var(--sema-color-brand-red);
}
[data-theme="dark"] .gestalt-copyright-line p,
[data-theme="dark"] .gestalt-copyright-line a {
    color: #9a9a9a;
}
[data-theme="dark"] .gestalt-hub-item:hover {
    background: #2a2a2a;
}
[data-theme="dark"] .gestalt-hub-info strong {
    color: #e0e0e0;
}
[data-theme="dark"] .gestalt-hub-info span {
    color: #9a9a9a;
}
[data-theme="dark"] .gestalt-hub-head {
    border-bottom-color: #333333;
}
[data-theme="dark"] .gestalt-hub-title {
    color: #e0e0e0;
}
[data-theme="dark"] .gestalt-cats-eyebrow {
    color: var(--sema-color-brand-red);
    background: rgba(255, 77, 106, 0.12);
}
[data-theme="dark"] .gestalt-theme-btn {
    background: #242424;
    color: #e0e0e0;
    border: 1px solid #333333;
}

/* 屏幕阅读器专用 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}


/* ═══ jslet 红底白字站标 ═══ */
.jslet-mark {
    flex-shrink: 0;
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(230, 0, 35, 0.28);
    display: inline-block;
    vertical-align: middle;
}
.gestalt-footer-name {
    font-weight: 800;
    font-size: 1.02rem;
    color: #111111;
    letter-spacing: -0.2px;
}
[data-theme="dark"] .gestalt-footer-name {
    color: #f0f0f0;
}


/* ═══ 首页品牌定位语 (Tools to calculate it. Research to understand it.) ═══ */
.gestalt-brand-statement {
    margin: 4px 0 0;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--sema-color-text-subtle, #767676);
    letter-spacing: -0.2px;
}
[data-theme="dark"] .gestalt-brand-statement {
    color: #a0a0a0;
}