.meridian-guide {
    --guide-header-height: 80px;
    --guide-accent: #0f766e;
    --guide-accent-strong: #115e59;
    --guide-accent-soft: #ccfbf1;
    --guide-gold: #d97706;
    --guide-gold-soft: #fef3c7;
    --guide-ink: #1f2937;
    --guide-text: #4b5563;
    --guide-muted: #6b7280;
    --guide-border: #e5e7eb;
    --guide-bg: #f7f8f4;
    --guide-surface: #ffffff;
    --guide-shadow: 0 18px 48px rgba(15, 23, 42, 0.08);
    background:
        radial-gradient(circle at top right, rgba(217, 119, 6, 0.08), transparent 34%),
        radial-gradient(circle at top left, rgba(15, 118, 110, 0.10), transparent 28%),
        #f7f8f4;
    color: var(--guide-ink);
    font-family: var(--font-main, "IBM Plex Sans", system-ui, sans-serif);
    margin: 0;
}

.meridian-guide * { box-sizing: border-box; }

.meridian-guide .header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(16px);
    box-shadow: 0 2px 18px rgba(15, 23, 42, 0.08);
    padding: 0 20px;
}

.meridian-guide .nav {
    max-width: 1180px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
    height: auto;
    min-height: var(--guide-header-height);
}

.meridian-guide .logo {
    color: var(--guide-accent);
    text-decoration: none;
    font-weight: 700;
    font-size: 24px;
}

.meridian-guide .nav-links {
    display: flex;
    gap: 18px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.meridian-guide .nav-links a {
    color: var(--guide-ink);
    text-decoration: none;
    font-weight: 500;
}

.meridian-guide .nav-links a:hover,
.meridian-guide .nav-links a:focus-within{ color: var(--guide-accent); }

.meridian-guide__hero {
    margin-top: calc(var(--guide-header-height) + 8px);
    padding: 56px 20px 26px;
}

.meridian-guide__hero-shell {
    max-width: 1180px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
    align-items: stretch;
}

.meridian-guide__hero-copy,
.meridian-guide__hero-visual,
.meridian-guide__panel,
.meridian-guide__chapter-card,
.meridian-guide__section-card,
.meridian-guide__table-card,
.meridian-guide__callout,
.meridian-guide__gallery-card {
    background: var(--guide-surface);
    border: 1px solid rgba(255, 255, 255, 0.7);
    border-radius: 24px;
    box-shadow: var(--guide-shadow);
}

.meridian-guide__hero-copy {
    padding: 38px;
    height: 100%;
    background:
        linear-gradient(145deg, rgba(255,255,255,0.95), rgba(255,255,255,0.88)),
        linear-gradient(135deg, rgba(15,118,110,0.12), rgba(217,119,6,0.12));
}

.meridian-guide__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(15, 118, 110, 0.10);
    color: var(--guide-accent-strong);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 18px;
}

.meridian-guide__hero h1,
.meridian-guide__hero-copy h1 {
    font-size: clamp(2rem, 5vw, 3.4rem);
    line-height: 1.08;
    margin: 0 0 16px;
    color: var(--guide-ink);
}

.meridian-guide__hero p,
.meridian-guide__hero-copy p {
    margin: 0 0 16px;
    color: var(--guide-text);
    line-height: 1.8;
    font-size: 17px;
}

.meridian-guide__hero-visual {
    padding: 18px;
    position: relative;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    margin: 0;
}

.meridian-guide__hero-visual::after {
    content: "";
    position: absolute;
    inset: auto -40px -50px auto;
    width: 180px;
    height: 180px;
    background: radial-gradient(circle, rgba(217,119,6,0.18), transparent 70%);
}

.meridian-guide__hero-visual img {
    width: 100%;
    height: clamp(380px, 36vw, 540px);
    display: block;
    border-radius: 18px;
    background: #f3f4f6;
    object-fit: contain;
    flex: 1 1 auto;
}

.meridian-guide__hero-caption {
    margin: 16px 8px 6px;
    font-size: 13px;
    line-height: 1.65;
    color: var(--guide-muted);
}

.meridian-guide__container {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 20px 60px;
}

.meridian-guide__panel {
    padding: 28px;
    margin-bottom: 26px;
}

.meridian-guide__intro {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 24px;
    align-items: start;
}

.meridian-guide__intro h2,
.meridian-guide__toc-title,
.meridian-guide__section-title,
.meridian-guide__table-card h2 {
    margin: 0 0 14px;
    color: var(--guide-ink);
    line-height: 1.25;
}

.meridian-guide__intro p,
.meridian-guide__section-card p,
.meridian-guide__table-note,
.meridian-guide__callout p,
.meridian-guide__panel p {
    color: var(--guide-text);
    line-height: 1.82;
    margin: 0 0 14px;
}

.meridian-guide__stat-grid {
    display: grid;
    gap: 14px;
}

.meridian-guide__stat {
    padding: 18px;
    border-radius: 18px;
    background: linear-gradient(135deg, #f8fafc, #ffffff);
    border: 1px solid var(--guide-border);
}

.meridian-guide__stat strong {
    display: block;
    font-size: 28px;
    line-height: 1;
    color: var(--guide-accent-strong);
    margin-bottom: 8px;
}

.meridian-guide__stat span {
    color: var(--guide-muted);
    font-size: 14px;
    line-height: 1.5;
}

.meridian-guide__toc-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.meridian-guide__toc-box {
    padding: 22px;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(15,118,110,0.08), rgba(217,119,6,0.08));
    border: 1px solid rgba(15,118,110,0.12);
}

.meridian-guide__toc-box ul {
    margin: 0;
    padding-left: 18px;
}

.meridian-guide__toc-box li,
.meridian-guide__section-card li,
.meridian-guide__callout li {
    color: var(--guide-text);
    line-height: 1.75;
    margin-bottom: 10px;
}

.meridian-guide__toc-box a {
    color: var(--guide-accent-strong);
    text-decoration: none;
}

.meridian-guide__toc-box a:hover,
.meridian-guide__toc-box a:focus-within{ text-decoration: underline; }

.meridian-guide__table-card {
    padding: 26px;
    margin-bottom: 26px;
}

.meridian-guide__table-wrap {
    overflow-x: auto;
    border-radius: 20px;
    border: 1px solid var(--guide-border);
}

.meridian-guide__table {
    width: 100%;
    min-width: 760px;
    border-collapse: collapse;
    background: #fff;
}

.meridian-guide__table th {
    background: linear-gradient(135deg, var(--guide-accent), #155e75);
    color: #fff;
    font-weight: 600;
    text-align: left;
    padding: 14px 16px;
    font-size: 14px;
}

.meridian-guide__table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--guide-border);
    color: var(--guide-text);
    vertical-align: top;
    font-size: 14px;
    line-height: 1.6;
}

.meridian-guide__table tr:nth-child(even) td { background: #fcfcfb; }
.meridian-guide__table tr:last-child td { border-bottom: none; }
.meridian-guide__table td strong { color: var(--guide-ink); }

.meridian-guide__chapter-list {
    display: grid;
    gap: 16px;
}

.meridian-guide__chapter-card {
    display: grid;
    grid-template-columns: 60px minmax(0, 1fr) 28px;
    gap: 18px;
    align-items: center;
    text-decoration: none;
    padding: 22px;
    color: inherit;
    transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.meridian-guide__chapter-card:hover,
.meridian-guide__chapter-card:focus {
    transform: translateY(-4px);
    box-shadow: 0 22px 48px rgba(15, 23, 42, 0.12);
    border-color: rgba(15, 118, 110, 0.18);
}

.meridian-guide__chapter-number {
    width: 60px;
    height: 60px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, var(--guide-accent), var(--guide-gold));
}

.meridian-guide__chapter-card h3 {
    margin: 0 0 6px;
    color: var(--guide-ink);
    font-size: 19px;
}

.meridian-guide__chapter-card p {
    margin: 0;
    color: var(--guide-text);
    line-height: 1.7;
}

.meridian-guide__chapter-chip {
    display: inline-block;
    margin-top: 10px;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(15,118,110,0.08);
    color: var(--guide-accent-strong);
    font-size: 12px;
    font-weight: 700;
}

.meridian-guide__chapter-arrow {
    color: var(--guide-muted);
    font-size: 22px;
}

.meridian-guide__gallery {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.meridian-guide__gallery-card {
    padding: 14px;
}

.meridian-guide__gallery-card img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 16px;
    background: #f8fafc;
}

.meridian-guide__gallery-card p {
    margin: 12px 6px 4px;
    font-size: 13px;
    color: var(--guide-muted);
}

.meridian-guide__search-links ul {
    margin: 0;
    padding-left: 18px;
}

.meridian-guide__search-links a {
    color: var(--guide-accent-strong);
    text-decoration: none;
}

.meridian-guide__search-links a:hover,
.meridian-guide__search-links a:focus-within{ text-decoration: underline; }

.meridian-guide__tags {
    margin-top: 28px;
}

.meridian-guide__part-shell {
    max-width: 1120px;
    margin: calc(var(--guide-header-height) + 16px) auto 60px;
    padding: 0 20px;
}

.meridian-guide__part-header {
    padding: 34px;
    border-radius: 28px;
    color: #fff;
    box-shadow: var(--guide-shadow);
    margin-bottom: 24px;
    position: relative;
    overflow: hidden;
}

.meridian-guide__part-header::after {
    content: "";
    position: absolute;
    width: 180px;
    height: 180px;
    right: -40px;
    top: -40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.12);
}

.meridian-guide__part-header p {
    margin: 0 0 12px;
    opacity: 0.88;
    font-size: 14px;
}

.meridian-guide__part-header h1 {
    margin: 0;
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    line-height: 1.15;
}

.element-metal .meridian-guide__part-header,
.element-metal .meridian-guide__fact-number { background: linear-gradient(135deg, #475569, #0f172a); }
.element-earth .meridian-guide__part-header,
.element-earth .meridian-guide__fact-number { background: linear-gradient(135deg, #b45309, #92400e); }
.element-fire .meridian-guide__part-header,
.element-fire .meridian-guide__fact-number { background: linear-gradient(135deg, #dc2626, #7f1d1d); }
.element-water .meridian-guide__part-header,
.element-water .meridian-guide__fact-number { background: linear-gradient(135deg, #2563eb, #0f172a); }
.element-wood .meridian-guide__part-header,
.element-wood .meridian-guide__fact-number { background: linear-gradient(135deg, #15803d, #14532d); }

.meridian-guide__part-lead {
    display: grid;
    gap: 24px;
    grid-template-columns: minmax(0, 1fr) 300px;
    margin-bottom: 24px;
}

.meridian-guide__figure-grid {
    display: grid;
    gap: 18px;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.meridian-guide__figure-card {
    background: #fff;
    border: 1px solid var(--guide-border);
    border-radius: 22px;
    padding: 14px;
    box-shadow: var(--guide-shadow);
}

.meridian-guide__figure-card img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 16px;
    background: #f8fafc;
}

.meridian-guide__figure-card figcaption {
    margin-top: 12px;
    font-size: 13px;
    line-height: 1.6;
    color: var(--guide-muted);
}

.meridian-guide__fact-stack {
    display: grid;
    gap: 14px;
}

.meridian-guide__fact-card {
    background: #fff;
    border-radius: 22px;
    padding: 20px;
    border: 1px solid var(--guide-border);
    box-shadow: var(--guide-shadow);
}

.meridian-guide__fact-label {
    display: block;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--guide-muted);
    margin-bottom: 8px;
    font-weight: 700;
}

.meridian-guide__fact-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 64px;
    padding: 10px 12px;
    border-radius: 18px;
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 10px;
}

.meridian-guide__fact-card p {
    margin: 0;
    color: var(--guide-text);
    line-height: 1.7;
}

.meridian-guide__section-grid {
    display: grid;
    gap: 20px;
    margin-bottom: 24px;
}

.meridian-guide__section-card,
.meridian-guide__callout {
    padding: 26px;
}

.meridian-guide__section-card h2,
.meridian-guide__callout h2,
.meridian-guide__callout h3 {
    margin: 0 0 14px;
    line-height: 1.3;
    color: var(--guide-ink);
}

.meridian-guide__key-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-top: 18px;
}

.meridian-guide__key-card {
    border: 1px solid var(--guide-border);
    border-radius: 18px;
    padding: 18px;
    background: linear-gradient(135deg, #ffffff, #fbfbfa);
}

.meridian-guide__key-card h3 {
    margin: 0 0 10px;
    font-size: 17px;
}

.meridian-guide__key-card p {
    margin: 0;
    color: var(--guide-text);
    line-height: 1.72;
}

.meridian-guide__callout {
    background: linear-gradient(135deg, rgba(15,118,110,0.10), rgba(217,119,6,0.10));
    border: 1px solid rgba(15,118,110,0.18);
}

.meridian-guide__nav-buttons {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
    margin: 28px 0 0;
}

.meridian-guide__nav-btn {
    flex: 1;
    min-width: 240px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 22px;
    border-radius: 20px;
    background: #fff;
    color: var(--guide-ink);
    text-decoration: none;
    border: 1px solid var(--guide-border);
    box-shadow: var(--guide-shadow);
    transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.meridian-guide__nav-btn:hover,
.meridian-guide__nav-btn:focus {
    transform: translateY(-3px);
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.12);
}

.meridian-guide__nav-btn small {
    display: block;
    color: var(--guide-muted);
    margin-bottom: 4px;
}

.meridian-guide__nav-btn strong {
    color: var(--guide-accent-strong);
    line-height: 1.35;
}

.meridian-guide__footer {
    padding: 32px 20px 48px;
    text-align: center;
    color: var(--guide-muted);
}

.meridian-guide__footer p { margin: 0 0 8px; }

@media (max-width: 980px) {
    .meridian-guide__hero-shell,
    .meridian-guide__intro,
    .meridian-guide__part-lead {
        grid-template-columns: 1fr;
    }

    .meridian-guide__toc-grid,
    .meridian-guide__gallery {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    html,
    body.meridian-guide {
        max-width: 100%;
        overflow-x: hidden;
    }

    .meridian-guide {
        --guide-header-height: 128px;
        max-width: 100%;
        overflow-x: hidden;
    }

    .meridian-guide .header {
        max-width: 100%;
        overflow-x: hidden;
        padding: 10px 16px 12px;
    }
    .meridian-guide .nav {
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        gap: 10px;
        width: 100%;
        min-width: 0;
        min-height: var(--guide-header-height);
    }
    html body.meridian-guide .header .nav-links,
    html body.meridian-guide .nav-links {
        display: flex !important;
        position: static !important;
        width: 100% !important;
        min-width: 0 !important;
        max-width: 100% !important;
        height: auto !important;
        max-height: none !important;
        margin: 0 !important;
        padding: 0 !important;
        flex-direction: row !important;
        flex-wrap: wrap !important;
        align-items: center !important;
        gap: 8px !important;
        overflow: visible !important;
        border: 0 !important;
        background: transparent !important;
        box-shadow: none !important;
        text-align: left !important;
        left: auto !important;
        right: auto !important;
        top: auto !important;
        z-index: auto !important;
    }
    html body.meridian-guide .header .nav-links li,
    html body.meridian-guide .nav-links li {
        width: auto !important;
        margin: 0 !important;
        padding: 0 !important;
    }
    html body.meridian-guide .header .nav-links a,
    html body.meridian-guide .nav-links a {
        width: auto !important;
        min-height: 36px !important;
        justify-content: center !important;
        padding: 8px 12px !important;
        border-radius: 999px !important;
        border: 1px solid rgba(15, 118, 110, 0.10) !important;
        background: rgba(15, 118, 110, 0.08) !important;
        font-size: 14px !important;
        font-weight: 600 !important;
        line-height: 1.2 !important;
        text-align: center !important;
    }
    .meridian-guide__hero { padding: 44px 16px 20px; }
    .meridian-guide__hero-shell,
    .meridian-guide__hero-copy,
    .meridian-guide__hero-visual,
    .meridian-guide__container {
        min-width: 0;
        max-width: 100%;
    }

    .meridian-guide__hero h1,
    .meridian-guide__hero-copy h1 {
        font-size: clamp(1.85rem, 7.2vw, 2.15rem);
        overflow-wrap: anywhere;
    }

    .meridian-guide__hero p,
    .meridian-guide__hero-copy p,
    .meridian-guide__panel p {
        overflow-wrap: anywhere;
    }

    .meridian-guide__hero-copy,
    .meridian-guide__panel,
    .meridian-guide__table-card,
    .meridian-guide__section-card,
    .meridian-guide__callout { padding: 22px; }
    .meridian-guide__chapter-card {
        grid-template-columns: 52px minmax(0, 1fr);
    }
    .meridian-guide__chapter-arrow { display: none; }
    .meridian-guide__part-shell { margin-top: calc(var(--guide-header-height) + 16px); padding: 0 16px; }
    .meridian-guide__part-header { padding: 26px; }
    .meridian-guide__nav-btn { min-width: 100%; }
}

@media (max-width: 768px) {
    .meridian-guide {
        --guide-header-height: 48px;
    }

    .meridian-guide .header {
        padding: 0 14px;
    }

    .meridian-guide .header:not(:has(.menu-toggle)) .nav {
        height: var(--guide-header-height) !important;
        min-height: var(--guide-header-height) !important;
        flex-direction: row !important;
        align-items: center !important;
        justify-content: center !important;
        gap: 0 !important;
    }

    .meridian-guide .header .logo,
    .meridian-guide .header a.logo {
        font-size: 20px !important;
        line-height: 1 !important;
    }

    html body.meridian-guide .header:not(:has(.menu-toggle)) .nav-links {
        display: none !important;
    }

    .meridian-guide__hero {
        margin-top: var(--guide-header-height);
        padding: 12px 16px 18px;
    }

    .meridian-guide__hero h1,
    .meridian-guide__hero-copy h1 {
        overflow-wrap: normal;
        word-break: normal;
        hyphens: none;
        -webkit-hyphens: none;
    }
}

@media (max-width: 340px) {
    .meridian-guide__hero h1,
    .meridian-guide__hero-copy h1 {
        font-size: 1.72rem;
        line-height: 1.14;
    }
}