.beadographer-guide-page {
    --font-heading: "Vollkorn", Times, "Times New Roman", serif;
    --font-body: "Helvetica Neue", Helvetica, Arial, sans-serif;
    --page-background: #e7f4fa;
    --surface: #ffffff;
    --surface-strong: #dcedf5;
    --surface-accent: #f4fbfe;
    --border: #b8d8e7;
    --border-strong: #8ecbe5;
    --text: #173847;
    --text-muted: #507181;
    --link: #166b93;
    --link-hover: #0f4d69;
    --shadow: 0 18px 44px rgba(33, 82, 103, 0.12);
    padding: 2rem 0 4rem;
    background:
        radial-gradient(circle at top left, rgba(142, 203, 229, 0.34), transparent 24%),
        radial-gradient(circle at right 18%, rgba(102, 175, 206, 0.16), transparent 28%),
        linear-gradient(180deg, #fafdff 0%, var(--page-background) 100%);
    color: var(--text);
    font-family: var(--font-body);
    line-height: 1.6;
}

.beadographer-guide-page * {
    box-sizing: border-box;
}

.beadographer-guide-page a {
    color: var(--link);
}

.beadographer-guide-page a:hover {
    color: var(--link-hover);
}

.beadographer-guide-page img {
    max-width: 100%;
    height: auto;
}

.beadographer-guide-page .guide-shell {
    display: grid;
    grid-template-columns: minmax(16rem, 20rem) minmax(0, 1fr);
    gap: 2rem;
    max-width: 88rem;
    margin: 0 auto;
    padding: 0 1.25rem;
}

.beadographer-guide-page .guide-sidebar {
    position: sticky;
    top: 1rem;
    align-self: start;
    max-height: calc(100vh - 2rem);
    overflow: auto;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: 1rem;
    background: rgba(255, 253, 249, 0.95);
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
}

.beadographer-guide-page .guide-sidebar-title {
    margin: 0 0 0.85rem;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    font-family: var(--font-heading);
}

.beadographer-guide-page .guide-sidebar ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.beadographer-guide-page .guide-sidebar li + li {
    margin-top: 0.18rem;
}

.beadographer-guide-page .guide-sidebar .toc-level-1 + .toc-level-1,
.beadographer-guide-page .guide-sidebar .toc-level-1 + .toc-level-2 {
    margin-top: 0.7rem;
}

.beadographer-guide-page .guide-sidebar a {
    display: block;
    padding: 0.3rem 0.55rem;
    border-radius: 0.55rem;
    color: var(--text-muted);
    font-size: 0.95rem;
    text-decoration: none;
    transition: background-color 120ms ease, color 120ms ease;
}

.beadographer-guide-page .guide-sidebar a:hover,
.beadographer-guide-page .guide-sidebar a.is-active {
    background: var(--surface-strong);
    color: var(--text);
}

.beadographer-guide-page .guide-sidebar .toc-level-1 a {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: 0.01em;
}

.beadographer-guide-page .guide-sidebar .toc-level-2 a {
    padding-left: 1rem;
    font-size: 0.91rem;
    font-weight: 600;
    color: #2f6178;
    border-left: 0.18rem solid rgba(142, 203, 229, 0.55);
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.beadographer-guide-page .guide-sidebar .toc-level-3 a {
    padding-left: 1.45rem;
    font-size: 0.84rem;
    font-weight: 500;
    color: var(--text-muted);
    opacity: 0.92;
}

.beadographer-guide-page .guide-main {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.beadographer-guide-page .guide-section {
    position: relative;
    padding: 1.8rem clamp(1.2rem, 2vw, 2.3rem) 2rem;
    border: 1px solid var(--border);
    border-radius: 1.5rem;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(244, 251, 254, 0.96));
    box-shadow: var(--shadow);
    overflow: hidden;
}

.beadographer-guide-page .guide-section::before {
    content: "";
    position: absolute;
    inset: 0 0 auto;
    height: 0.38rem;
    background: linear-gradient(90deg, rgba(142, 203, 229, 0.95), rgba(73, 143, 175, 0.75));
}

.beadographer-guide-page .guide-main h1,
.beadographer-guide-page .guide-main h2,
.beadographer-guide-page .guide-main h3 {
    scroll-margin-top: 1rem;
    line-height: 1.2;
    font-family: var(--font-heading);
}

.beadographer-guide-page .guide-main h1 {
    margin: 0 0 1rem;
    font-size: clamp(2rem, 4vw, 3.1rem);
    padding-bottom: 0.9rem;
    border-bottom: 1px solid var(--border);
}

.beadographer-guide-page .guide-main h2 {
    margin-top: 2.3rem;
    font-size: clamp(1.4rem, 2.6vw, 1.9rem);
}

.beadographer-guide-page .guide-main h3 {
    margin-top: 1.7rem;
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    color: var(--text-muted);
}

.beadographer-guide-page .guide-main p,
.beadographer-guide-page .guide-main ul,
.beadographer-guide-page .guide-main ol,
.beadographer-guide-page .guide-main table,
.beadographer-guide-page .guide-main blockquote {
    max-width: 70rem;
}

.beadographer-guide-page .guide-main > .guide-section > :last-child {
    margin-bottom: 0;
}

.beadographer-guide-page .guide-main table:not(.guide-tool) {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0 1.4rem;
    background: var(--surface);
    overflow: hidden;
    border-radius: 0.8rem;
}

.beadographer-guide-page .guide-main table:not(.guide-tool) th,
.beadographer-guide-page .guide-main table:not(.guide-tool) td {
    padding: 0.7rem 0.8rem;
    border: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

.beadographer-guide-page .guide-main table:not(.guide-tool) th {
    background: var(--surface-strong);
}

.beadographer-guide-page .guide-tool {
    width: 100%;
    border-collapse: collapse;
    margin: 0 0 1rem;
}

.beadographer-guide-page .guide-tool td {
    border: 0;
    padding: 0;
    vertical-align: top;
}

.beadographer-guide-page .guide-tool-icon {
    width: 56px;
    padding-right: 12px;
}

.beadographer-guide-page .guide-tool-icon img {
    display: block;
    width: 32px;
    height: 32px;
}

.beadographer-guide-page .guide-callout {
    position: relative;
    margin: 1.1rem 0;
    padding: 0.85rem 1rem 0.85rem 2.95rem;
    border: 1px solid var(--border);
    border-radius: 1rem;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.55);
}

.beadographer-guide-page .guide-callout::before {
    position: absolute;
    top: 0.95rem;
    left: 1.05rem;
    font-size: 1.05rem;
    line-height: 1;
    transform: translateY(0.18rem);
}

.beadographer-guide-page .guide-callout p {
    margin: 0;
}

.beadographer-guide-page .guide-tip {
    background: linear-gradient(180deg, rgba(241, 249, 253, 0.98), rgba(226, 242, 249, 0.96));
    border-color: var(--border-strong);
}

.beadographer-guide-page .guide-tip::before {
    content: "💡";
}

.beadographer-guide-page .guide-warning {
    background: linear-gradient(180deg, #fff8eb, #fff2d8);
    border-color: #e9c575;
}

.beadographer-guide-page .guide-warning::before {
    content: "⚠️";
}

.beadographer-guide-page kbd {
    display: inline-block;
    min-width: 1.5em;
    padding: 0 0.35em;
    border: 1px solid #b9cfdb;
    border-radius: 4px;
    background: #f5fbfe;
    box-shadow: inset 0 1px 0 #ffffff;
    color: #173847;
    font-size: 0.9em;
    line-height: 1.5;
    text-align: center;
    white-space: nowrap;
}

@media (max-width: 960px) {
    .beadographer-guide-page {
        padding: 1rem 0 2rem;
    }

    .beadographer-guide-page .guide-shell {
        grid-template-columns: 1fr;
        padding: 0 0.75rem;
    }

    .beadographer-guide-page .guide-sidebar {
        display: none;
    }

    .beadographer-guide-page .guide-main {
        gap: 1rem;
    }

    .beadographer-guide-page .guide-section {
        padding: 1.35rem 1rem 1.5rem;
        border-radius: 1rem;
    }
}