/* 帮助中心 — Mission Console（深空底、青绿主色、左侧固定目录树 + 3×4 卡片网格） */

/* ----- Console token 覆盖（依赖 common.css 变量体系） ----- */
body.page-ledger {
    --canvas: #0B1220;
    --canvas-deep: #060B16;
    --surface-card: #131C2E;
    --surface-card-elevated: #18243C;
    --surface-strong: #1C2942;

    --primary: #2DD4BF;
    --primary-active: #14B8A6;
    --primary-glow: rgba(45, 212, 191, 0.35);

    --ink: #E5E7EB;
    --body: #94A3B8;
    --body-strong: #E5E7EB;
    --muted: #64748B;
    --muted-soft: #475569;
    --on-primary: #06231F;

    --hairline: rgba(255, 255, 255, 0.08);
    --hairline-soft: rgba(255, 255, 255, 0.05);
    --hairline-strong: rgba(255, 255, 255, 0.14);

    --semantic-success: #2DD4BF;
    --accent-cyan: #38BDF8;

    --font-display: "Space Grotesk", "Noto Sans SC", sans-serif;
    --font-body: "Inter", "Noto Sans SC", sans-serif;
    --font-code: "JetBrains Mono", monospace;

    --font-primary: var(--font-body);

    --bg-primary: var(--canvas);
    --bg-secondary: var(--surface-card);
    --bg-white: var(--surface-card-elevated);
    --bg-hover: var(--surface-strong);
    --text-primary: var(--ink);
    --text-secondary: var(--body);
    --text-tertiary: var(--muted);
    --accent-color: var(--primary);
    --accent-hover: var(--primary-active);
    --accent-light: rgba(45, 212, 191, 0.1);
    --primary-blue: var(--primary);
    --primary-blue-hover: var(--primary-active);
    --primary-blue-light: rgba(45, 212, 191, 0.1);
    --success-green: var(--semantic-success);
    --border-color: var(--hairline);
    --border-color-light: var(--hairline-soft);

    --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);

    background: var(--canvas);
    color: var(--body);
    font-family: var(--font-body);
    letter-spacing: 0;
}

body.page-ledger main {
    padding-top: calc(var(--nav-height) + 8px);
}

/* ----- Header / Nav (借 index.css 同名选择器) ----- */
body.page-ledger .site-header--ledger {
    position: relative;
}

body.page-ledger .main-nav {
    background: rgba(11, 18, 32, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    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-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-left: 14px;
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    background: rgba(45, 212, 191, 0.08);
    border: 1px solid rgba(45, 212, 191, 0.2);
    font-family: var(--font-code);
    font-size: 11px;
    color: var(--primary);
    letter-spacing: 0.02em;
}

body.page-ledger .nav-status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 8px var(--primary);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

body.page-ledger .nav-links a {
    color: var(--body);
    font-weight: 500;
    font-size: 14px;
    background: transparent;
}

body.page-ledger .nav-links a:hover {
    color: var(--ink);
    background: rgba(255, 255, 255, 0.06);
}

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 {
    display: flex;
    flex-direction: column;
    gap: 0;
    width: 100%;
}

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

body.page-ledger .nav-rule-line--accent {
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--primary) 20%,
        var(--primary) 80%,
        transparent 100%
    );
    opacity: 0.5;
}

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

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

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

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

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

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

/* ----- Buttons ----- */
body.page-ledger .btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-active) 100%);
    border-color: transparent;
    color: var(--on-primary);
    box-shadow: 0 4px 16px rgba(45, 212, 191, 0.25);
}

body.page-ledger .btn-primary:hover {
    box-shadow: 0 6px 24px rgba(45, 212, 191, 0.4);
    transform: translateY(-1px);
}

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

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

/* ----- Hero kicker (shared) ----- */
body.page-ledger .hero-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-code);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 20px;
    padding: 6px 14px;
    background: var(--accent-light);
    border: 1px solid rgba(45, 212, 191, 0.2);
    border-radius: var(--radius-pill);
}

body.page-ledger .kicker-mark {
    font-size: 14px;
    opacity: 0.9;
}

/* ----- Shared container ----- */
body.page-ledger .page-container-wide {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ----- Page Header / Hero (docs) ----- */
body.page-ledger .page-header--docs {
    position: relative;
    padding: 56px 0 48px;
    overflow: hidden;
    border-bottom: 1px solid var(--hairline);
    background:
        radial-gradient(ellipse 55% 50% at 10% 0%, rgba(45, 212, 191, 0.08), transparent),
        radial-gradient(ellipse 45% 40% at 90% 30%, rgba(56, 189, 248, 0.06), transparent),
        var(--canvas);
}

body.page-ledger .page-header-inner--docs {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, 420px);
    gap: 40px;
    align-items: end;
}

body.page-ledger .page-title {
    font-family: var(--font-display);
    font-size: clamp(32px, 4vw, 46px);
    font-weight: 600;
    line-height: 1.08;
    letter-spacing: -0.025em;
    color: var(--ink);
    margin-bottom: 16px;
}

body.page-ledger .page-lead {
    font-size: 17px;
    line-height: 1.65;
    color: var(--body);
    max-width: 52ch;
}

/* ----- Search box (hero) ----- */
body.page-ledger .search-box-inline {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 18px;
    background: var(--surface-card);
    border: 1px solid var(--hairline-strong);
    border-radius: var(--radius-pill);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

body.page-ledger .search-box-inline:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.15);
}

body.page-ledger .search-box-inline i {
    font-size: 14px;
    color: var(--muted);
}

body.page-ledger .search-box-inline input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 14px;
    font-family: var(--font-body);
    color: var(--ink);
    background: transparent;
    min-width: 0;
}

body.page-ledger .search-box-inline input::placeholder {
    color: var(--muted);
}

/* ----- Hot tags ----- */
body.page-ledger .page-header-search {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

body.page-ledger .search-hot-tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
}

body.page-ledger .hot-tag-label {
    font-size: 12px;
    color: var(--muted);
    font-weight: 500;
}

body.page-ledger .hot-tag {
    display: inline-flex;
    padding: 4px 14px;
    font-family: var(--font-code);
    font-size: 11px;
    color: var(--body);
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-pill);
    text-decoration: none;
    transition: border-color var(--transition-fast), color var(--transition-fast);
}

body.page-ledger .hot-tag:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* ----- Layout: sidebar + main grid ----- */
body.page-ledger .help-content-section {
    padding: 0;
    background: var(--canvas);
}

body.page-ledger .help-layout {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 40px;
    padding: 40px var(--space-md) 64px;
    align-items: start;
}

/* ----- Sidebar / TOC ----- */
body.page-ledger .help-sidebar {
    position: sticky;
    top: calc(var(--nav-height) + 24px);
    max-height: calc(100vh - var(--nav-height) - 48px);
    overflow-y: auto;
    padding: 20px;
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-md);
}

body.page-ledger .help-toc-label {
    font-family: var(--font-code);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 16px;
}

body.page-ledger .toc-group {
    margin-bottom: 16px;
}

body.page-ledger .toc-group-label {
    font-family: var(--font-code);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 6px;
}

body.page-ledger .toc-link {
    display: block;
    padding: 5px 0 5px 12px;
    border-left: 2px solid var(--hairline);
    font-size: 13px;
    line-height: 1.45;
    color: var(--body);
    text-decoration: none;
    transition: color var(--transition-fast), border-color var(--transition-fast);
    margin-bottom: 2px;
}

body.page-ledger .toc-link:hover,
body.page-ledger .toc-link.active {
    color: var(--primary);
    border-left-color: var(--primary);
}

/* ----- Help card grid (3×4) ----- */
body.page-ledger .help-main {
    min-width: 0;
}

body.page-ledger .help-card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

body.page-ledger .help-card {
    padding: 24px;
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal), transform var(--transition-normal);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

body.page-ledger .help-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

body.page-ledger .help-card:hover {
    border-color: var(--hairline-strong);
    box-shadow: var(--shadow-card);
    transform: translateY(-2px);
}

body.page-ledger .help-card:hover::before {
    opacity: 0.5;
}

body.page-ledger .help-card-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 16px;
    border: 1px solid rgba(45, 212, 191, 0.2);
    border-radius: var(--radius-sm);
    background: var(--accent-light);
    margin-bottom: 14px;
}

body.page-ledger .help-card h3 {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 8px;
    line-height: 1.3;
}

body.page-ledger .help-card p {
    font-size: 14px;
    line-height: 1.55;
    color: var(--body);
    margin-bottom: 16px;
    flex: 1;
}

body.page-ledger .help-card-link {
    font-family: var(--font-code);
    font-size: 12px;
    font-weight: 500;
    color: var(--primary);
    text-decoration: none;
    transition: opacity var(--transition-fast);
    margin-top: auto;
}

body.page-ledger .help-card-link:hover {
    opacity: 0.8;
}

/* ----- Help CTA Banner ----- */
body.page-ledger .help-cta-banner {
    padding: 64px 0;
    border-top: 1px solid var(--hairline);
    background:
        radial-gradient(ellipse 50% 60% at 30% 50%, rgba(45, 212, 191, 0.06), transparent),
        radial-gradient(ellipse 40% 50% at 80% 50%, rgba(56, 189, 248, 0.04), transparent),
        var(--canvas-deep);
}

body.page-ledger .help-cta-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

body.page-ledger .help-cta-copy h3 {
    font-family: var(--font-display);
    font-size: clamp(22px, 2.8vw, 30px);
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 8px;
}

body.page-ledger .help-cta-copy p {
    font-size: 15px;
    color: var(--body);
    max-width: 460px;
    margin: 0;
}

/* ----- Footer ----- */
body.page-ledger .site-footer--ledger {
    background: var(--canvas-deep);
    border-top: 1px solid var(--hairline);
    color: var(--body);
    position: relative;
}

body.page-ledger .site-footer--ledger::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, var(--primary) 30%, var(--accent-cyan) 70%, transparent 100%);
    opacity: 0.4;
}

body.page-ledger .footer-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

body.page-ledger .footer-main {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) repeat(4, minmax(0, 1fr));
    gap: 40px;
    padding: 48px 0 32px;
}

body.page-ledger .footer-logo-text {
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--ink);
}

body.page-ledger .footer-description {
    color: var(--body);
    font-size: 14px;
    line-height: 1.6;
    margin-top: 14px;
}

body.page-ledger .footer-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: var(--accent-light);
    border: 1px solid rgba(45, 212, 191, 0.2);
    border-radius: var(--radius-pill);
    font-family: var(--font-code);
    font-size: 11px;
    color: var(--primary);
    width: fit-content;
    margin-top: 16px;
}

body.page-ledger .footer-status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 8px var(--primary);
}

body.page-ledger .footer-group-title {
    font-family: var(--font-code);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 16px;
}

body.page-ledger .footer-links-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 0;
    margin: 0;
}

body.page-ledger .footer-links-list li a {
    color: var(--body);
    font-size: 14px;
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

body.page-ledger .footer-contact-item {
    color: var(--body);
    font-size: 14px;
    line-height: 1.6;
}

body.page-ledger .footer-contact-item strong {
    color: var(--ink);
    font-weight: 600;
}

body.page-ledger .footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    border-top: 1px solid var(--hairline);
}

body.page-ledger .footer-copyright {
    color: var(--muted);
    font-size: 13px;
}

body.page-ledger .footer-copyright p {
    margin: 0;
}

body.page-ledger .footer-social {
    display: flex;
    gap: 10px;
}

body.page-ledger .footer-social-link {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface-card);
    border: 1px solid var(--hairline-strong);
    border-radius: var(--radius-sm);
    color: var(--body);
    text-decoration: none;
    transition: border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
}

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

/* ----- Responsive ----- */
@media (max-width: 1100px) {
    body.page-ledger .help-card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1024px) {
    body.page-ledger .nav-container--ledger {
        grid-template-columns: auto 1fr auto;
    }

    body.page-ledger .nav-links--center {
        display: none;
    }

    body.page-ledger .nav-status {
        display: none;
    }

    body.page-ledger .page-header-inner--docs {
        grid-template-columns: 1fr;
    }

    body.page-ledger .page-header-search {
        order: -1;
    }

    body.page-ledger .help-layout {
        grid-template-columns: 1fr;
    }

    body.page-ledger .help-sidebar {
        display: none;
    }
}

@media (max-width: 768px) {
    body.page-ledger .page-header--docs {
        padding: 36px 0 32px;
    }

    body.page-ledger .help-card-grid {
        grid-template-columns: 1fr;
    }

    body.page-ledger .help-cta-inner {
        flex-direction: column;
        text-align: center;
    }

    body.page-ledger .help-cta-copy p {
        max-width: none;
    }

    body.page-ledger .footer-main {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    body.page-ledger .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}