/* ========================================
   Experts Page - GEO 专家频道
   首页式目录列表布局
   ======================================== */

.expert-visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
    padding: 0;
    margin: -1px;
}

.experts-page h1,
.experts-page h2,
.experts-page h3,
.experts-page p,
.experts-page input,
.experts-page button {
    letter-spacing: 0 !important;
}

.experts-page .is-hidden {
    display: none !important;
}

.experts-hero {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid #f1f5f9;
    padding-bottom: 1.75rem;
}

.experts-eyebrow,
.experts-sidebar-eyebrow {
    display: block;
    margin: 0 0 0.85rem;
    color: #2563eb;
    font-size: 0.7rem;
    font-weight: 900;
    line-height: 1;
    letter-spacing: 0 !important;
    text-transform: uppercase;
}

.experts-hero h1 {
    margin: 0;
    color: #0f172a;
    font-family: Manrope, Inter, sans-serif;
    font-size: 3.05rem;
    font-weight: 900;
    line-height: 1.08;
}

.experts-hero-copy {
    max-width: 34rem;
    margin: 0.9rem 0 0;
    color: #64748b;
    font-size: 0.98rem;
    line-height: 1.75;
}

.experts-hero-tabs {
    display: flex;
    align-items: center;
    gap: 1.4rem;
    flex-shrink: 0;
    padding-bottom: 0.25rem;
}

.experts-hero-tab {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2rem;
    min-width: 2rem;
    padding: 0.35rem 0.1rem;
    border: 0;
    background: transparent;
    color: #94a3b8;
    font-size: 0.9rem;
    font-weight: 800;
    transition: color 0.16s ease;
}

.experts-hero-tab.is-active {
    color: #2563eb;
}

.experts-hero-tab:hover {
    color: #0f172a;
}

.experts-toolbar {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 0.9rem;
    margin-bottom: 1.5rem;
}

.experts-search {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 0.65rem;
    min-height: 3.15rem;
    border: 1px solid #e2e8f0;
    border-radius: 0.9rem;
    background: #f8fafc;
    padding: 0 0.95rem;
}

.experts-search .material-symbols-outlined {
    width: 1rem;
    overflow: hidden;
    color: #94a3b8;
    font-size: 1rem;
    line-height: 1;
}

.experts-search input {
    width: 100%;
    border: 0;
    background: transparent;
    color: #0f172a;
    font-size: 0.9rem;
    font-weight: 700;
}

.experts-search input:focus {
    box-shadow: none;
    outline: 0;
}

.experts-search input::placeholder {
    color: #94a3b8;
}

.experts-filter-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
}

.experts-hero-tabs,
.experts-filter-group {
    scrollbar-width: none;
}

.experts-hero-tabs::-webkit-scrollbar,
.experts-filter-group::-webkit-scrollbar {
    display: none;
}

.expert-filter {
    min-height: 2.35rem;
    border: 1px solid #e2e8f0;
    border-radius: 0.75rem;
    background: #ffffff;
    color: #64748b;
    padding: 0.5rem 0.82rem;
    font-size: 0.78rem;
    font-weight: 850;
    transition: background-color 0.16s ease, color 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease;
}

.expert-filter:hover,
.expert-filter.is-active {
    border-color: #bfdbfe;
    background: #eff6ff;
    color: #2563eb;
    box-shadow: 0 6px 18px rgba(37, 99, 235, 0.08);
}

.expert-filter:focus-visible,
.expert-direction-button:focus-visible,
.experts-search input:focus-visible,
.experts-sidebar-heading button:focus-visible,
.experts-hero-tab:focus-visible {
    outline: 3px solid rgba(37, 99, 235, 0.22);
    outline-offset: 2px;
}

.experts-list {
    display: grid;
    gap: 0.75rem;
}

.expert-card {
    display: grid;
    grid-template-columns: 4.1rem minmax(0, 1fr) auto;
    gap: 1.05rem;
    align-items: flex-start;
    border: 1px solid #f1f5f9;
    border-radius: 1rem;
    padding: 1.08rem 1rem;
    background: #ffffff;
    color: inherit;
    text-decoration: none;
    transition: background-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.expert-card:hover {
    background: #f8fafc;
    border-color: #dbeafe;
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.045);
    transform: translateY(-1px);
}

.expert-card.is-hidden {
    display: none;
}

.expert-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3.9rem;
    height: 3.9rem;
    border: 1px solid #e6eef9;
    border-radius: 1rem;
    background: #eff6ff;
    color: #2563eb;
    font-size: 0.92rem;
    font-weight: 950;
}

.expert-card-main {
    min-width: 0;
}

.expert-card-heading {
    display: flex;
    flex-direction: column;
    gap: 0.28rem;
    align-items: flex-start;
}

.expert-card h2 {
    margin: 0;
    min-width: 0;
    color: #0f172a;
    font-family: Manrope, Inter, sans-serif;
    font-size: 1.08rem;
    font-weight: 900;
    line-height: 1.25;
}

.expert-card-heading span {
    color: #64748b;
    font-size: 0.86rem;
    font-weight: 820;
    line-height: 1.35;
}

.expert-card-arrow {
    align-self: center;
    color: #94a3b8;
    font-size: 1.25rem;
    transition: color 0.16s ease, transform 0.16s ease;
}

.expert-card:hover .expert-card-arrow {
    color: #2563eb;
    transform: translateX(0.15rem);
}

.expert-summary {
    max-width: 44rem;
    margin: 0.72rem 0 0;
    color: #64748b;
    font-size: 0.9rem;
    line-height: 1.72;
}

.expert-keyword-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    margin-top: 0.82rem;
}

.expert-keyword-tags span {
    display: inline-flex;
    align-items: center;
    min-height: 1.75rem;
    border-radius: 0.55rem;
    background: #f1f5f9;
    color: #64748b;
    padding: 0.28rem 0.55rem;
    font-size: 0.72rem;
    font-weight: 850;
    line-height: 1.2;
}

.experts-empty-state {
    border: 1px dashed #d8e3f2;
    border-radius: 1rem;
    background: #f8fbff;
    padding: 2rem;
    text-align: center;
}

.experts-empty-state.is-hidden {
    display: none;
}

.experts-empty-state h2 {
    margin: 0;
    color: #0f172a;
    font-family: Manrope, Inter, sans-serif;
    font-size: 1.1rem;
    font-weight: 900;
}

.experts-empty-state p {
    margin: 0.55rem 0 0;
    color: #64748b;
    font-size: 0.85rem;
    line-height: 1.7;
}

.expert-back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin-bottom: 1.2rem;
    color: #2563eb;
    font-size: 0.86rem;
    font-weight: 850;
    text-decoration: none;
}

.expert-back-link .material-symbols-outlined {
    font-size: 1rem;
}

.expert-detail-card {
    display: grid;
    gap: 1.2rem;
    border: 1px solid #e2e8f0;
    border-radius: 1.1rem;
    background: #ffffff;
    padding: 1.35rem;
    box-shadow: 0 18px 44px rgba(15, 23, 42, 0.04);
}

.expert-detail-hero {
    display: grid;
    grid-template-columns: 5rem minmax(0, 1fr);
    gap: 1.2rem;
    align-items: start;
    border-bottom: 1px solid #f1f5f9;
    padding-bottom: 1.25rem;
}

.expert-detail-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 4.75rem;
    height: 4.75rem;
    border: 1px solid #dbeafe;
    border-radius: 1.15rem;
    background: #eff6ff;
    color: #2563eb;
    font-size: 1.2rem;
    font-weight: 950;
}

.expert-detail-hero h1 {
    margin: 0;
    color: #0f172a;
    font-family: Manrope, Inter, sans-serif;
    font-size: 2.45rem;
    font-weight: 950;
    line-height: 1.08;
}

.expert-detail-title {
    margin: 0.65rem 0 0;
    color: #475569;
    font-size: 1rem;
    font-weight: 800;
    line-height: 1.65;
}

.expert-detail-section {
    display: grid;
    gap: 0.78rem;
}

.expert-detail-section h2 {
    margin: 0;
    color: #0f172a;
    font-family: Manrope, Inter, sans-serif;
    font-size: 1.12rem;
    font-weight: 900;
    line-height: 1.35;
}

.expert-detail-body {
    display: grid;
    gap: 0.68rem;
}

.expert-detail-body p {
    margin: 0;
    color: #64748b;
    font-size: 0.95rem;
    line-height: 1.78;
}

.expert-highlight-list {
    display: grid;
    gap: 0.56rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.expert-highlight-list li {
    position: relative;
    border: 1px solid #eef2f7;
    border-radius: 0.85rem;
    background: #f8fafc;
    color: #475569;
    padding: 0.64rem 0.82rem 0.64rem 1.92rem;
    font-size: 0.88rem;
    font-weight: 700;
    line-height: 1.55;
}

.expert-highlight-list li::before {
    content: "";
    position: absolute;
    top: 1rem;
    left: 0.86rem;
    width: 0.42rem;
    height: 0.42rem;
    border-radius: 999px;
    background: #2563eb;
}

.expert-detail-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
}

.expert-detail-links a {
    display: inline-flex;
    align-items: center;
    gap: 0.32rem;
    min-height: 2.35rem;
    border: 1px solid #bfdbfe;
    border-radius: 0.75rem;
    background: #eff6ff;
    color: #2563eb;
    padding: 0.55rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 850;
    text-decoration: none;
}

.expert-detail-links .material-symbols-outlined {
    font-size: 0.95rem;
}

.expert-not-found {
    border: 1px dashed #d8e3f2;
    border-radius: 1rem;
    background: #f8fbff;
    padding: 2rem;
}

.expert-not-found h1 {
    margin: 0;
    color: #0f172a;
    font-family: Manrope, Inter, sans-serif;
    font-size: 1.6rem;
    font-weight: 900;
}

.expert-not-found p {
    margin: 0.6rem 0 0;
    color: #64748b;
    font-size: 0.9rem;
    line-height: 1.75;
}

.experts-sidebar {
    align-self: start;
}

@media (min-width: 1024px) {
    .experts-page.is-detail-mode .experts-sidebar {
        margin-top: 2.5rem;
    }
}

.experts-tip-card {
    position: relative;
    overflow: hidden;
    border: 1px solid #e2e8f0;
    border-radius: 1rem;
    background: #ffffff;
    padding: 1.5rem;
}

.experts-tip-card h2 {
    margin: 0;
    color: #0f172a;
    font-family: Manrope, Inter, sans-serif;
    font-size: 1.25rem;
    font-weight: 900;
    line-height: 1.35;
}

.experts-tip-card p {
    margin: 0.9rem 0 1rem;
    color: #64748b;
    font-size: 0.88rem;
    line-height: 1.75;
}

.experts-sidebar-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    color: #2563eb;
    font-size: 0.85rem;
    font-weight: 850;
}

.experts-sidebar-link .material-symbols-outlined {
    font-size: 1rem;
    transition: transform 0.16s ease;
}

.experts-sidebar-link:hover .material-symbols-outlined {
    transform: translateX(0.15rem);
}

.experts-tip-watermark {
    position: absolute;
    right: -0.75rem;
    bottom: -1.4rem;
    color: #0f172a;
    font-size: 7rem;
    opacity: 0.04;
}

.experts-sidebar-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
    padding: 0 0.5rem;
}

.experts-sidebar-heading h2 {
    margin: 0;
    color: #94a3b8;
    font-size: 0.72rem;
    font-weight: 900;
    line-height: 1;
    text-transform: uppercase;
}

.experts-sidebar-heading button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2rem;
    min-width: 2rem;
    padding: 0.35rem 0.1rem;
    border: 0;
    background: transparent;
    color: #2563eb;
    font-size: 0.68rem;
    font-weight: 900;
    text-transform: uppercase;
}

.expert-direction-list,
.experts-resource-links {
    display: grid;
    gap: 0.75rem;
}

.expert-direction-button,
.experts-resource-links a {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    border: 1px solid #f1f5f9;
    border-radius: 1rem;
    background: #ffffff;
    padding: 0.95rem;
    color: #475569;
    text-align: left;
    transition: border-color 0.16s ease, background-color 0.16s ease, box-shadow 0.16s ease;
}

.expert-direction-button:hover,
.expert-direction-button.is-active,
.experts-resource-links a:hover {
    border-color: #bfdbfe;
    background: #f8fafc;
    box-shadow: 0 10px 28px rgba(15, 23, 42, 0.045);
}

.expert-direction-button .material-symbols-outlined,
.experts-resource-links .material-symbols-outlined {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 0.75rem;
    background: #eff6ff;
    color: #2563eb;
    font-size: 1rem;
}

.expert-direction-button span:not(.material-symbols-outlined),
.experts-resource-links strong {
    min-width: 0;
    color: #334155;
    font-size: 0.86rem;
    font-weight: 850;
}

.expert-direction-button strong {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.6rem;
    height: 1.6rem;
    border-radius: 999px;
    background: #f8fafc;
    color: #94a3b8;
    font-size: 0.72rem;
    font-weight: 900;
}

.experts-checklist {
    display: grid;
    gap: 0.75rem;
}

.experts-checklist div {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 0.75rem;
    border: 1px solid #f1f5f9;
    border-radius: 1rem;
    background: #ffffff;
    padding: 0.95rem;
}

.experts-checklist span {
    color: #2563eb;
    font-size: 0.72rem;
    font-weight: 950;
}

.experts-checklist p {
    margin: 0;
    color: #64748b;
    font-size: 0.82rem;
    line-height: 1.65;
}

@media (max-width: 1120px) {
    .experts-hero {
        align-items: flex-start;
        flex-direction: column;
    }

    .expert-card {
        grid-template-columns: 4rem minmax(0, 1fr) auto;
    }
}

@media (max-width: 767px) {
    .experts-hero h1 {
        font-size: 2.35rem;
    }

    .experts-hero-tabs {
        width: 100%;
        justify-content: flex-start;
        overflow-x: auto;
        overscroll-behavior-x: contain;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 0.1rem;
    }

    .experts-filter-group {
        flex-wrap: nowrap;
        overflow-x: auto;
        overscroll-behavior-x: contain;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 0.2rem;
    }

    .expert-filter {
        flex: 0 0 auto;
    }

    .expert-card {
        grid-template-columns: 3.25rem minmax(0, 1fr);
        gap: 0.8rem;
        border: 1px solid #f1f5f9;
        padding: 0.95rem;
    }

    .expert-card-arrow {
        display: none;
    }

    .expert-avatar {
        width: 3.05rem;
        height: 3.05rem;
        border-radius: 0.85rem;
    }

    .expert-detail-card {
        padding: 1rem;
    }

    .expert-detail-hero {
        grid-template-columns: 3.5rem minmax(0, 1fr);
        gap: 0.85rem;
    }

    .expert-detail-avatar {
        width: 3.35rem;
        height: 3.35rem;
        border-radius: 0.9rem;
        font-size: 0.95rem;
    }

    .expert-detail-hero h1 {
        font-size: 2rem;
    }
}