/* ==========================================================================
   Solutions Flagship V2 — Calm & Ergonomic Engineering Architecture
   File: assets/css/solutions-top-design.css
   Standard: Calm & Natural Modular Chapter Card UI + Ergonomic Reading Modes
   ========================================================================== */

:root {
    --page-bg: #f3f5f8;
    --card-bg: #ffffff;
    --card-bg-subtle: #f8fafc;
    --card-border: #e2e8f0;
    --card-border-hover: #cbd5e1;
    --text-heading: #1e293b;
    --text-body: #334155;
    --text-muted: #64748b;
    --accent-calm: #2b4c7e;
    --accent-calm-light: #eff4fb;
    --accent-gold: #b48a2c;
    --accent-gold-light: #fcf8ee;
    --accent-safe: #15803d;
    --accent-safe-bg: #f0fdf4;
    --accent-warn: #b45309;
    --accent-warn-bg: #fffbeb;
    --accent-danger: #b91c1c;
    --accent-danger-bg: #fef2f2;
    --table-header-bg: #f1f5f9;
    --table-zebra-bg: #f8fafc;
    --base-font-size: 16.5px;
    --card-radius: 12px;
    --card-shadow: 0 2px 12px rgba(15, 23, 42, 0.04), 0 1px 2px rgba(15, 23, 42, 0.02);
}

/* Ergonomic Theme Modes */
body.theme-warm {
    --page-bg: #f2efe9;
    --card-bg: #faf8f5;
    --card-bg-subtle: #f3EFEA;
    --card-border: #e3ded6;
    --table-header-bg: #ebe6dc;
    --table-zebra-bg: #f5f2ec;
    --text-heading: #26231f;
    --text-body: #3d3934;
}

body.theme-dark {
    --page-bg: #0f172a;
    --card-bg: #1e293b;
    --card-bg-subtle: #162032;
    --card-border: #334155;
    --card-border-hover: #475569;
    --text-heading: #f1f5f9;
    --text-body: #cbd5e1;
    --text-muted: #94a3b8;
    --accent-calm: #60a5fa;
    --accent-calm-light: rgba(96, 165, 250, 0.12);
    --accent-gold: #eab308;
    --accent-gold-light: rgba(234, 179, 8, 0.12);
    --table-header-bg: #26354d;
    --table-zebra-bg: #1a2536;
}

body.font-large {
    --base-font-size: 18px;
}

/* Strict PC Mobile Hamburger Prohibition (>= 992px) */
@media (min-width: 992px) {
    .mobile-nav-toggle,
    button.mobile-nav-toggle,
    .header .mobile-nav-toggle {
        display: none !important;
        visibility: hidden !important;
        pointer-events: none !important;
        opacity: 0 !important;
    }
}

body.solutions-v2-page {
    background-color: var(--page-bg) !important;
    color: var(--text-body) !important;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    font-size: var(--base-font-size);
    line-height: 1.76;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.25s ease, color 0.25s ease;
}

/* Eliminate global H2 yellow underline interference */
.calm-chapter-title::after,
.calm-chapter-card h2::after,
.calm-chapter-card h3::after,
.sol-v2-section-title::after,
.overview-lead-card h2::after {
    display: none !important;
    content: none !important;
}

/* ==========================================================================
   Compact Golden-Ratio Hero Banner (260px - 330px strict rule)
   ========================================================================== */
.flow-hero {
    position: relative !important;
    min-height: 260px !important;
    max-height: 330px !important;
    padding: 88px 20px 28px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    text-align: center !important;
    overflow: hidden !important;
    background-color: #0f172a !important;
}

.flow-hero .hero-bg-img {
    position: absolute !important;
    inset: 0 !important;
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
    object-position: center 30% !important;
    z-index: 1 !important;
    filter: brightness(0.92);
}

.flow-hero::before {
    content: "" !important;
    position: absolute !important;
    inset: 0 !important;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.92) 0%, rgba(15, 23, 42, 0.74) 50%, rgba(15, 23, 42, 0.48) 100%) !important;
    z-index: 2 !important;
}

.flow-hero-content {
    position: relative !important;
    z-index: 3 !important;
    max-width: min(920px, calc(100vw - 32px)) !important;
    text-align: center !important;
    margin: 0 auto !important;
}

.flow-hero .breadcrumb {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 8px !important;
    margin-bottom: 8px !important;
    font-size: 0.84rem !important;
    color: rgba(241, 245, 249, 0.85) !important;
}

.flow-hero .breadcrumb a {
    color: rgba(241, 245, 249, 0.9) !important;
    text-decoration: none !important;
}

.flow-hero .breadcrumb a:hover {
    color: #eab308 !important;
}

.flow-hero-title {
    font-size: 1.65rem !important;
    line-height: 1.38 !important;
    margin: 0 auto 10px !important;
    max-width: 900px !important;
    font-weight: 700 !important;
    color: #ffffff !important;
    letter-spacing: 0.01em !important;
}

.flow-hero .article-meta-info {
    display: flex !important;
    flex-wrap: wrap !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 16px !important;
    font-size: 0.84rem !important;
    color: rgba(226, 232, 240, 0.92) !important;
}

.flow-hero .meta-pill {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 2px 10px;
    border-radius: 999px;
    font-size: 0.78rem;
    color: #f8fafc;
}

@media (max-width: 991px) {
    .flow-hero {
        min-height: 210px !important;
        max-height: none !important;
        padding: 75px 16px 22px !important;
    }
    .flow-hero-title {
        font-size: 1.35rem !important;
        margin-bottom: 10px !important;
    }
}

/* ==========================================================================
   Dual-Solution Hub Switcher Bar (解决方案双擎切换栏)
   ========================================================================== */
.solutions-hub-switcher-wrap {
    background: var(--card-bg);
    border-bottom: 1px solid var(--card-border);
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.03);
    position: relative;
    z-index: 20;
}

.solutions-hub-switcher {
    max-width: 1280px;
    margin: 0 auto;
    padding: 12px 20px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.hub-switch-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 12px 18px;
    border-radius: 10px;
    border: 1.5px solid var(--card-border);
    background: var(--card-bg-subtle);
    text-decoration: none !important;
    transition: all 0.2s ease;
}

.hub-switch-card:hover {
    border-color: var(--accent-calm);
    background: var(--card-bg);
    transform: translateY(-1px);
}

.hub-switch-card.is-active {
    border-color: var(--accent-calm);
    background: var(--accent-calm-light);
    box-shadow: inset 3px 0 0 var(--accent-calm);
}

.hub-switch-left {
    display: flex;
    flex-direction: column;
    gap: 3px;
    min-width: 0;
}

.hub-switch-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.76rem;
    font-weight: 700;
    color: var(--accent-calm);
    letter-spacing: 0.02em;
}

.hub-switch-card.is-active .hub-switch-tag {
    color: var(--accent-calm);
}

.hub-switch-title {
    font-size: 0.96rem;
    font-weight: 700;
    color: var(--text-heading);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.hub-switch-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.hub-switch-badge {
    flex-shrink: 0;
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 0.78rem;
    font-weight: 600;
    background: var(--card-bg);
    color: var(--text-heading);
    border: 1px solid var(--card-border);
}

.hub-switch-card.is-active .hub-switch-badge {
    background: var(--accent-calm);
    color: #ffffff;
    border-color: var(--accent-calm);
}

@media (max-width: 860px) {
    .solutions-hub-switcher {
        grid-template-columns: 1fr;
        gap: 10px;
        padding: 10px 14px;
    }
    .hub-switch-title,
    .hub-switch-desc {
        white-space: normal;
    }
}

/* ==========================================================================
   Two-Column Desktop Ergonomic Grid (270px Sticky Sidebar + Stream)
   ========================================================================== */
.article-layout.centered-layout {
    max-width: 1280px !important;
    margin: 24px auto 64px !important;
    padding: 0 20px !important;
    display: grid !important;
    grid-template-columns: 270px minmax(0, 1fr) !important;
    gap: 28px !important;
    align-items: start !important;
}

.sidebar-column {
    position: sticky !important;
    top: 88px !important;
    max-height: calc(100vh - 104px) !important;
    overflow-y: auto !important;
    scrollbar-width: none !important;
    display: flex !important;
    flex-direction: column !important;
    gap: 16px !important;
}

.sidebar-column::-webkit-scrollbar {
    display: none !important;
}

@media (max-width: 991px) {
    .article-layout.centered-layout {
        grid-template-columns: 1fr !important;
        margin: 16px auto 40px !important;
        padding: 0 14px !important;
    }
    .sidebar-column {
        position: static !important;
        max-height: none !important;
        order: 2 !important;
    }
    .modular-stream-col {
        order: 1 !important;
    }
}

/* Sidebar Cards */
.expert-profile-card,
.reading-mode-card,
.toc-card {
    background: var(--card-bg) !important;
    border: 1px solid var(--card-border) !important;
    border-radius: var(--card-radius) !important;
    padding: 18px !important;
    box-shadow: var(--card-shadow) !important;
}

.expert-profile-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.profile-avatar {
    width: 54px !important;
    height: 54px !important;
    border-radius: 50% !important;
    object-fit: cover !important;
    object-position: center 18% !important;
    border: 2px solid var(--accent-gold) !important;
    flex-shrink: 0 !important;
}

.expert-name {
    font-size: 1.02rem;
    font-weight: 700;
    color: var(--text-heading);
    margin: 0 0 2px;
}

.expert-role {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin: 0;
}

.expert-bio-text {
    font-size: 0.82rem;
    color: var(--text-body);
    line-height: 1.58;
    margin-bottom: 12px;
}

.expert-quick-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sidebar-btn-primary,
.sidebar-btn-secondary {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 100%;
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 0.84rem;
    font-weight: 600;
    text-decoration: none !important;
    cursor: pointer;
    transition: all 0.2s ease;
}

.sidebar-btn-primary {
    background: var(--accent-calm);
    color: #ffffff !important;
    border: 1px solid var(--accent-calm);
}

.sidebar-btn-primary:hover {
    opacity: 0.92;
}

.sidebar-btn-secondary {
    background: var(--accent-gold-light);
    color: var(--text-heading) !important;
    border: 1px solid rgba(180, 138, 44, 0.35);
}

.sidebar-btn-secondary:hover {
    background: rgba(180, 138, 44, 0.18);
}

/* Reading Mode Card */
.reading-mode-title,
.toc-card-title {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.04em;
    margin: 0 0 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.mode-btn-group {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    margin-bottom: 8px;
}

.font-btn-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
}

.mode-btn {
    padding: 5px 6px;
    font-size: 0.78rem;
    border-radius: 6px;
    border: 1px solid var(--card-border);
    background: var(--card-bg-subtle);
    color: var(--text-body);
    cursor: pointer;
    font-weight: 500;
    transition: all 0.15s ease;
}

.mode-btn.active {
    background: var(--accent-calm);
    color: #ffffff;
    border-color: var(--accent-calm);
    font-weight: 600;
}

/* TOC Navigation */
.toc-list {
    list-style: none !important;
    padding: 0 !important;
    margin: 0 !important;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.toc-list li a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 10px;
    border-radius: 7px;
    font-size: 0.83rem;
    color: var(--text-body);
    text-decoration: none !important;
    transition: all 0.15s ease;
    line-height: 1.4;
}

.toc-list li a:hover {
    background: var(--card-bg-subtle);
    color: var(--accent-calm);
}

.toc-list li a.active-toc {
    background: var(--accent-calm-light);
    color: var(--accent-calm);
    font-weight: 700;
    border-left: 3px solid var(--accent-calm);
}

.toc-num {
    font-size: 0.74rem;
    font-weight: 700;
    color: var(--text-muted);
    min-width: 20px;
}

/* ==========================================================================
   Right Stream: Calm Modular Chapter Cards
   ========================================================================== */
.modular-stream-col {
    display: flex;
    flex-direction: column;
    gap: 20px;
    min-width: 0;
}

.overview-lead-card,
.calm-chapter-card {
    background: var(--card-bg) !important;
    border: 1px solid var(--card-border) !important;
    border-radius: var(--card-radius) !important;
    padding: 28px 32px !important;
    box-shadow: var(--card-shadow) !important;
    scroll-margin-top: 96px;
}

@media (max-width: 767px) {
    .overview-lead-card,
    .calm-chapter-card {
        padding: 20px 16px !important;
    }
}

.chapter-header-row {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 18px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--card-border);
}

.chapter-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 4px 10px;
    border-radius: 6px;
    background: var(--accent-calm-light);
    color: var(--accent-calm);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    flex-shrink: 0;
    margin-top: 3px;
}

.calm-chapter-title {
    font-size: 1.32rem !important;
    font-weight: 700 !important;
    color: var(--text-heading) !important;
    line-height: 1.4 !important;
    margin: 0 !important;
}

.chapter-subtitle {
    font-size: 0.86rem;
    color: var(--text-muted);
    margin: 4px 0 0;
}

/* KPI Grid in Lead Card */
.kpi-benchmark-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    margin: 18px 0 14px;
}

.kpi-benchmark-box {
    background: var(--card-bg-subtle);
    border: 1px solid var(--card-border);
    border-radius: 10px;
    padding: 14px 16px;
    border-top: 3px solid var(--accent-calm);
}

.kpi-benchmark-box.gold-top {
    border-top-color: var(--accent-gold);
}

.kpi-benchmark-val {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--text-heading);
    font-variant-numeric: tabular-nums;
    line-height: 1.25;
    margin-bottom: 4px;
}

.kpi-benchmark-label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-body);
    margin-bottom: 2px;
}

.kpi-benchmark-note {
    font-size: 0.75rem;
    color: var(--text-muted);
}

@media (max-width: 767px) {
    .kpi-benchmark-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Policy Pill Strip */
.policy-basis-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 14px;
    padding: 12px 14px;
    background: var(--card-bg-subtle);
    border-radius: 8px;
    border-left: 3px solid var(--accent-gold);
    font-size: 0.83rem;
    color: var(--text-body);
}

.policy-tag {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 2px 9px;
    border-radius: 5px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--accent-calm);
}

/* ==========================================================================
   Module 01: Interactive "Three Reserves" & Deferred Zone Unlocker Sandbox
   ========================================================================== */
.sandbox-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 20px;
    margin-top: 16px;
}

@media (max-width: 900px) {
    .sandbox-grid {
        grid-template-columns: 1fr;
    }
}

.sandbox-panel {
    background: var(--card-bg-subtle);
    border: 1px solid var(--card-border);
    border-radius: 10px;
    padding: 18px 20px;
}

.sandbox-panel-title {
    font-size: 0.98rem;
    font-weight: 700;
    color: var(--text-heading);
    margin: 0 0 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.control-group {
    margin-bottom: 14px;
}

.control-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.84rem;
    font-weight: 600;
    color: var(--text-body);
    margin-bottom: 6px;
}

.control-val-badge {
    font-variant-numeric: tabular-nums;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 1px 8px;
    border-radius: 5px;
    font-weight: 700;
    color: var(--accent-calm);
}

.sandbox-select,
.sandbox-range {
    width: 100%;
}

.sandbox-select {
    padding: 8px 12px;
    border-radius: 7px;
    border: 1px solid var(--card-border);
    background: var(--card-bg);
    color: var(--text-heading);
    font-size: 0.86rem;
    font-weight: 500;
}

.sandbox-range {
    accent-color: var(--accent-calm);
    cursor: pointer;
}

.three-reserves-gauges {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin: 14px 0;
}

.gauge-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 10px 12px;
    text-align: center;
}

.gauge-name {
    font-size: 0.76rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.gauge-num {
    font-size: 1.18rem;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    color: var(--text-heading);
}

.gauge-status {
    display: inline-block;
    margin-top: 4px;
    padding: 1px 7px;
    border-radius: 99px;
    font-size: 0.72rem;
    font-weight: 700;
}

.status-ok {
    background: var(--accent-safe-bg);
    color: var(--accent-safe);
}

.status-warn {
    background: var(--accent-danger-bg);
    color: var(--accent-danger);
}

.unlock-steps-chain {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 12px;
}

.unlock-step-box {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-left: 3px solid var(--accent-calm);
    border-radius: 8px;
    padding: 10px 14px;
}

.unlock-step-head {
    display: flex;
    justify-content: space-between;
    font-size: 0.84rem;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 3px;
}

.unlock-step-body {
    font-size: 0.8rem;
    color: var(--text-body);
    line-height: 1.5;
}

/* ==========================================================================
   Calm Data Tables (Soft Grey-Blue Headers, Tabular Figures)
   ========================================================================== */
.table-container {
    width: 100%;
    overflow-x: auto;
    margin: 16px 0;
    border: 1px solid var(--card-border);
    border-radius: 10px;
    background: var(--card-bg);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.86rem;
    font-variant-numeric: tabular-nums;
}

.data-table th {
    background: var(--table-header-bg) !important;
    color: var(--text-heading) !important;
    font-weight: 700 !important;
    text-align: left;
    padding: 12px 14px;
    border-bottom: 1.5px solid var(--card-border);
    white-space: nowrap;
}

.data-table td {
    padding: 11px 14px;
    border-bottom: 1px solid var(--card-border);
    color: var(--text-body);
    vertical-align: top;
    line-height: 1.55;
}

.data-table tbody tr:nth-child(even) {
    background: var(--table-zebra-bg);
}

.data-table tbody tr:hover {
    background: var(--accent-calm-light);
}

/* ==========================================================================
   Module 03: Interactive 5-Hazard Tabs
   ========================================================================== */
.hazard-tabs-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--card-border);
    padding-bottom: 12px;
}

.hazard-tab-btn {
    padding: 8px 15px;
    border-radius: 8px;
    border: 1px solid var(--card-border);
    background: var(--card-bg-subtle);
    color: var(--text-body);
    font-size: 0.86rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.18s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.hazard-tab-btn:hover {
    border-color: var(--accent-calm);
    color: var(--accent-calm);
}

.hazard-tab-btn.is-active {
    background: var(--accent-calm);
    color: #ffffff;
    border-color: var(--accent-calm);
}

.hazard-tab-pane {
    display: none;
}

.hazard-tab-pane.is-active {
    display: block;
}

.hazard-prescription-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 16px;
}

@media (max-width: 860px) {
    .hazard-prescription-grid {
        grid-template-columns: 1fr;
    }
}

.prescription-card {
    background: var(--card-bg-subtle);
    border: 1px solid var(--card-border);
    border-radius: 10px;
    padding: 16px;
}

.prescription-card h4 {
    font-size: 0.94rem;
    font-weight: 700;
    color: var(--text-heading);
    margin: 0 0 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.prescription-card p,
.prescription-card ul {
    font-size: 0.83rem;
    color: var(--text-body);
    margin: 0;
    padding-left: 16px;
    line-height: 1.6;
}

/* ==========================================================================
   Module 04: 10 High-Frequency Expert Review Trap Cards
   ========================================================================== */
.trap-filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.trap-filter-btn {
    padding: 5px 12px;
    border-radius: 99px;
    border: 1px solid var(--card-border);
    background: var(--card-bg-subtle);
    color: var(--text-body);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
}

.trap-filter-btn.is-active {
    background: var(--text-heading);
    color: #ffffff;
    border-color: var(--text-heading);
}

.trap-cards-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.unified-trap-card {
    border: 1px solid var(--card-border);
    border-radius: 10px;
    overflow: hidden;
    background: var(--card-bg);
}

.trap-card-header {
    background: var(--table-header-bg);
    padding: 11px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    border-bottom: 1px solid var(--card-border);
}

.trap-title {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--text-heading);
    display: flex;
    align-items: center;
    gap: 8px;
}

.trap-category-pill {
    font-size: 0.74rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 4px;
    background: var(--card-bg);
    color: var(--accent-calm);
    border: 1px solid var(--card-border);
    white-space: nowrap;
}

.trap-card-split {
    display: grid;
    grid-template-columns: 1fr 1.15fr;
}

@media (max-width: 767px) {
    .trap-card-split {
        grid-template-columns: 1fr;
    }
}

.trap-wrong-col {
    padding: 14px 16px;
    background: var(--accent-danger-bg);
    border-right: 1px solid var(--card-border);
    font-size: 0.83rem;
}

.trap-right-col {
    padding: 14px 16px;
    background: var(--card-bg);
    font-size: 0.83rem;
}

.trap-col-label {
    font-size: 0.76rem;
    font-weight: 700;
    margin-bottom: 5px;
    display: block;
}

.trap-wrong-col .trap-col-label {
    color: var(--accent-danger);
}

.trap-right-col .trap-col-label {
    color: var(--accent-safe);
}

/* ==========================================================================
   Photos & Lightbox (.image-center)
   ========================================================================== */
.image-center {
    margin: 22px auto !important;
    max-width: 780px !important;
    background: var(--card-bg-subtle) !important;
    border: 1px solid var(--card-border) !important;
    border-radius: 10px !important;
    padding: 10px !important;
    text-align: center !important;
}

.image-center img {
    width: 100% !important;
    max-height: 440px !important;
    object-fit: contain !important;
    border-radius: 6px !important;
    cursor: zoom-in !important;
    display: block !important;
    margin: 0 auto !important;
}

.image-caption {
    margin-top: 8px !important;
    font-size: 0.82rem !important;
    color: var(--text-muted) !important;
    line-height: 1.5 !important;
    text-align: center !important;
}

/* ==========================================================================
   Module 06: Accordion Outlines & Unified Action Cards
   ========================================================================== */
.outline-accordion {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 16px 0;
}

.outline-drawer {
    border: 1px solid var(--card-border);
    border-radius: 10px;
    background: var(--card-bg);
    overflow: hidden;
}

.outline-drawer-btn {
    width: 100%;
    padding: 14px 18px;
    background: var(--table-header-bg);
    border: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    text-align: left;
    font-size: 0.94rem;
    font-weight: 700;
    color: var(--text-heading);
    cursor: pointer;
}

.outline-drawer-body {
    padding: 16px 20px;
    border-top: 1px solid var(--card-border);
    display: none;
    font-size: 0.84rem;
}

.outline-drawer.is-open .outline-drawer-body {
    display: block;
}

.outline-grid-cols {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

@media (max-width: 767px) {
    .outline-grid-cols {
        grid-template-columns: 1fr;
    }
}

.outline-chapter-item {
    background: var(--card-bg-subtle);
    border: 1px solid var(--card-border);
    border-radius: 7px;
    padding: 10px 12px;
}

.outline-chapter-item strong {
    display: block;
    color: var(--text-heading);
    margin-bottom: 3px;
}

/* Lightbox Overlay */
.sol-lightbox-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.88);
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
    cursor: zoom-out;
}

.sol-lightbox-overlay.is-open {
    display: flex;
}

.sol-lightbox-overlay img {
    max-width: min(1200px, 94vw);
    max-height: 88vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}