/* 功能页 — Ledger Warm：暖纸编辑风 · Tab 面板 + 卡片网格 */

body.page-ledger {
    --canvas: #f4f0e8;
    --canvas-deep: #ebe5da;
    --surface-card: #faf8f4;
    --surface-card-elevated: #ffffff;
    --surface-strong: #e8e2d6;
    --primary: #b45309;
    --primary-active: #92400e;
    --ink: #1a2744;
    --body: #4a5568;
    --muted: #718096;
    --on-primary: #ffffff;
    --hairline: #ddd6c8;
    --hairline-strong: #c9bfae;
    --accent-light: rgba(180, 83, 9, 0.1);
    --font-display: "Fraunces", "Noto Sans SC", Georgia, serif;
    --font-body: "Source Sans 3", "Noto Sans SC", sans-serif;
    --nav-height: 72px;
    --radius-sm: 6px;
    --radius-md: 10px;

    font-family: var(--font-body);
    background: var(--canvas);
    color: var(--body);
}

body.page-ledger .main-nav {
    background: var(--canvas);
    border-bottom: none;
    height: auto;
    display: flex;
    flex-direction: column;
}

body.page-ledger .nav-container--ledger {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    height: var(--nav-height);
    gap: var(--space-md);
}

body.page-ledger .nav-links--center {
    justify-self: center;
}

body.page-ledger .nav-right {
    justify-self: end;
    gap: 10px;
}

body.page-ledger .logo-brand {
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--ink);
    font-size: 17px;
}

body.page-ledger .nav-links a {
    color: var(--body);
    font-weight: 500;
    background: transparent;
}

body.page-ledger .nav-links a:hover {
    color: var(--ink);
    background: rgba(26, 39, 68, 0.05);
}

body.page-ledger .nav-links a.active {
    color: var(--primary);
    background: var(--accent-light);
}

body.page-ledger .nav-cta {
    height: 36px;
    padding: 0 16px;
    font-size: 14px;
}

body.page-ledger .nav-rule-line {
    display: block;
    height: 1px;
    background: var(--hairline);
}

body.page-ledger .nav-rule-line--accent {
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary) 20%, var(--primary) 80%, transparent);
    opacity: 0.35;
}

body.page-ledger .dropdown-trigger {
    border-color: var(--hairline-strong);
    color: var(--body);
    background: var(--surface-card-elevated);
}

body.page-ledger .dropdown-trigger:hover {
    background: var(--surface-card);
    color: var(--ink);
}

body.page-ledger .dropdown-content {
    background: var(--surface-card-elevated);
    border-color: var(--hairline-strong);
    box-shadow: 0 4px 12px rgba(26, 39, 68, 0.06);
}

body.page-ledger .dropdown-content a {
    color: var(--body);
    border-color: var(--hairline);
}

body.page-ledger .dropdown-content a:hover {
    background: var(--surface-card);
    color: var(--ink);
}

body.page-ledger .dropdown-content a.active {
    background: var(--accent-light);
    color: var(--primary);
}

body.page-ledger .btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--on-primary);
    border-radius: var(--radius-sm);
    font-weight: 600;
}

body.page-ledger .btn-primary:hover {
    background: var(--primary-active);
    border-color: var(--primary-active);
}

body.page-ledger .btn-secondary {
    background: var(--surface-card-elevated);
    border-color: var(--hairline-strong);
    color: var(--ink);
    border-radius: var(--radius-sm);
    font-weight: 600;
}

body.page-ledger .btn-secondary:hover {
    background: var(--surface-card);
    border-color: var(--hairline-strong);
}

/* —— 十三项核心能力矩阵 —— */
.capabilities-matrix {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 40px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--hairline);
}

.capability-chip {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    background: var(--surface-card-elevated);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-md);
}

.capability-chip i {
    color: var(--primary);
    font-size: 16px;
    flex-shrink: 0;
}

.capability-chip h3 {
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.35;
    margin: 0;
}

body.page-ledger footer {
    background: var(--canvas-deep);
    border-top-color: var(--hairline-strong);
    color: var(--body);
}

body.page-ledger .footer-logo-text,
body.page-ledger .footer-contact-item strong {
    font-family: var(--font-display);
    color: var(--ink);
}

body.page-ledger .footer-group-title {
    font-family: var(--font-body);
    color: var(--primary);
    letter-spacing: 0.06em;
}

body.page-ledger .footer-description,
body.page-ledger .footer-links-list li a,
body.page-ledger .footer-contact-item,
body.page-ledger .footer-copyright {
    color: var(--body);
}

body.page-ledger .footer-links-list li a:hover {
    color: var(--primary);
}

body.page-ledger .footer-bottom {
    border-top-color: var(--hairline-strong);
}

body.page-ledger .footer-social-link {
    background: var(--surface-card-elevated);
    border: 1px solid var(--hairline-strong);
    color: var(--body);
}

body.page-ledger .footer-social-link:hover {
    background: var(--surface-card);
    color: var(--primary);
    border-color: var(--primary);
}

main {
    padding-top: var(--nav-height);
    background: var(--canvas);
}

.page-container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ----- page-header：全宽横幅 + 统计条 ----- */
.page-header--features {
    background: var(--canvas-deep);
    border-bottom: 1px solid var(--hairline);
}

.page-header-banner {
    padding: 56px 0 0;
}

.page-header-banner-inner {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.page-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 20px;
}

.page-breadcrumb a {
    color: var(--body);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.page-breadcrumb a:hover {
    color: var(--primary);
}

.page-breadcrumb i {
    font-size: 9px;
}

.page-eyebrow {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 12px;
}

.page-title {
    font-family: var(--font-display);
    font-size: clamp(34px, 4.5vw, 48px);
    font-weight: 700;
    line-height: 1.12;
    letter-spacing: -0.02em;
    color: var(--ink);
    margin-bottom: 16px;
    max-width: 640px;
}

.page-description {
    font-size: 17px;
    line-height: 1.65;
    color: var(--body);
    max-width: 560px;
    margin: 0;
}

.page-header-stats {
    margin-top: 40px;
    background: var(--ink);
    color: var(--surface-card-elevated);
}

.page-header-stats-inner {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.stat-item {
    padding: 24px 20px;
    border-right: 1px solid rgba(255, 255, 255, 0.12);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-item:last-child {
    border-right: none;
}

.stat-value {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: var(--surface-card-elevated);
}

.stat-value--accent {
    color: #fbbf24;
}

.stat-label {
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.65);
}

/* ----- features-database：Tab 面板 + 卡片网格 ----- */
.features-database {
    padding: 56px 0 72px;
}

.domain-tabs {
    position: relative;
}

.domain-tabs input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.tab-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--hairline);
}

.tab-nav label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 600;
    color: var(--body);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.tab-nav label:hover {
    background: var(--canvas-deep);
    color: var(--ink);
}

.tab-nav label i {
    font-size: 13px;
    opacity: 0.7;
}

#tab-core:checked ~ .tab-nav label[for="tab-core"],
#tab-analytics:checked ~ .tab-nav label[for="tab-analytics"],
#tab-ops:checked ~ .tab-nav label[for="tab-ops"],
#tab-cx:checked ~ .tab-nav label[for="tab-cx"],
#tab-growth:checked ~ .tab-nav label[for="tab-growth"],
#tab-platform:checked ~ .tab-nav label[for="tab-platform"] {
    background: var(--accent-light);
    border-color: rgba(180, 83, 9, 0.25);
    color: var(--primary);
}

.tab-panel {
    display: none;
    animation: tabFade 0.25s ease;
}

@keyframes tabFade {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

#tab-core:checked ~ .tab-panels #panel-core,
#tab-analytics:checked ~ .tab-panels #panel-analytics,
#tab-ops:checked ~ .tab-panels #panel-ops,
#tab-cx:checked ~ .tab-panels #panel-cx,
#tab-growth:checked ~ .tab-panels #panel-growth,
#tab-platform:checked ~ .tab-panels #panel-platform {
    display: block;
}

.panel-intro {
    margin-bottom: 24px;
}

.panel-intro h2 {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 8px;
}

.panel-intro p {
    font-size: 15px;
    line-height: 1.6;
    color: var(--body);
    margin: 0;
    max-width: 640px;
}

.module-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.module-card {
    background: var(--surface-card-elevated);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-md);
    padding: 22px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.module-card:hover {
    border-color: rgba(180, 83, 9, 0.35);
    box-shadow: 0 6px 20px rgba(44, 36, 23, 0.06);
}

.module-card-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 10px;
}

.module-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-light);
    border-radius: var(--radius-sm);
    color: var(--primary);
    font-size: 16px;
    flex-shrink: 0;
}

.status-pill {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 3px 8px;
    border-radius: 999px;
    flex-shrink: 0;
}

.status-live {
    background: rgba(5, 120, 87, 0.12);
    color: #047857;
}

.status-beta {
    background: rgba(180, 83, 9, 0.12);
    color: var(--primary);
}

.module-card h3 {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
    color: var(--ink);
    margin: 0;
}

.module-card p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--body);
    margin: 0;
    flex: 1;
}

.module-tag {
    font-size: 12px;
    font-weight: 600;
    color: var(--muted);
    padding-top: 8px;
    border-top: 1px solid var(--hairline);
}

/* ----- cta-simple ----- */
.cta-simple {
    background: var(--primary);
    color: var(--surface-card-elevated);
}

.cta-simple-inner {
    max-width: 1140px;
    margin: 0 auto;
    padding: 48px var(--space-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}

.cta-simple-copy h2 {
    font-family: var(--font-display);
    font-size: 26px;
    font-weight: 700;
    color: var(--surface-card-elevated);
    margin-bottom: 8px;
}

.cta-simple-copy p {
    font-size: 16px;
    line-height: 1.55;
    color: rgba(255, 255, 255, 0.85);
    margin: 0;
    max-width: 480px;
}

.cta-actions {
    display: flex;
    gap: 12px;
    flex-shrink: 0;
}

body.page-ledger .cta-simple .btn-primary {
    background: var(--surface-card-elevated);
    border-color: var(--surface-card-elevated);
    color: var(--primary);
}

body.page-ledger .cta-simple .btn-primary:hover {
    background: var(--canvas);
    border-color: var(--canvas);
}

body.page-ledger .cta-simple .btn-secondary {
    border-color: rgba(255, 255, 255, 0.45);
    color: var(--surface-card-elevated);
}

body.page-ledger .cta-simple .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--surface-card-elevated);
    color: var(--surface-card-elevated);
}

@media (max-width: 900px) {
    .page-header-stats-inner {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .stat-item:nth-child(2) {
        border-right: none;
    }

    .stat-item:nth-child(1),
    .stat-item:nth-child(2) {
        border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    }

    .module-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .cta-simple-inner {
        flex-direction: column;
        text-align: center;
    }

    .cta-actions {
        width: 100%;
        max-width: 320px;
        flex-direction: column;
    }
}

@media (max-width: 640px) {
    .page-header-stats-inner {
        grid-template-columns: 1fr;
    }

    .stat-item {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    }

    .stat-item:last-child {
        border-bottom: none;
    }

    .module-grid {
        grid-template-columns: 1fr;
    }

    .tab-nav {
        flex-direction: column;
    }

    .tab-nav label {
        width: 100%;
    }
}