:root {
    --guide-ink: #211711;
    --guide-muted: #675951;
    --guide-soft: #fff7ef;
    --guide-paper: #ffffff;
    --guide-line: #eadfd8;
    --guide-accent: #d95408;
    --guide-accent-soft: #fff0e4;
    --guide-green: #4f8069;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 92px; }

body {
    margin: 0;
    color: var(--guide-ink);
    background: #fff;
    font-family: "Microsoft YaHei UI", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
    font-size: 17px;
    line-height: 1.8;
}

a { color: var(--guide-accent); }

.guide-main { padding-top: 76px; }

.guide-hero {
    padding: 72px 24px 58px;
    background: var(--guide-soft);
    border-bottom: 1px solid var(--guide-line);
}

.guide-hero-inner,
.guide-layout,
.guide-footer-inner {
    width: min(1180px, calc(100% - 48px));
    margin: 0 auto;
}

.guide-eyebrow {
    margin: 0 0 12px;
    color: var(--guide-accent);
    font: 700 12px/1.5 Consolas, monospace;
    letter-spacing: 1.2px;
}

.guide-hero h1 {
    max-width: 860px;
    margin: 0;
    color: var(--guide-ink);
    font-size: clamp(34px, 5vw, 54px);
    line-height: 1.25;
    letter-spacing: 0;
}

.guide-lead {
    max-width: 820px;
    margin: 22px 0 0;
    color: #44372f;
    font-size: 20px;
    line-height: 1.85;
}

.guide-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 28px;
    margin-top: 28px;
    color: var(--guide-muted);
    font-size: 14px;
}

.guide-meta span { display: inline-flex; gap: 7px; align-items: baseline; }
.guide-meta strong { color: var(--guide-ink); }

.guide-layout {
    display: grid;
    grid-template-columns: minmax(0, 820px) 240px;
    gap: 64px;
    align-items: start;
    padding-top: 54px;
    padding-bottom: 80px;
}

.guide-article { min-width: 0; }

.guide-section {
    padding: 0 0 46px;
    margin: 0 0 46px;
    border-bottom: 1px solid var(--guide-line);
    scroll-margin-top: 92px;
}

.guide-section:last-child { margin-bottom: 0; }

.guide-section h2 {
    margin: 0 0 16px;
    color: var(--guide-ink);
    font-size: 30px;
    line-height: 1.35;
}

.guide-section h3 {
    margin: 28px 0 8px;
    color: var(--guide-ink);
    font-size: 21px;
    line-height: 1.45;
}

.guide-section p { margin: 14px 0; color: #4d4038; }

.guide-section ul,
.guide-section ol {
    margin: 14px 0;
    padding-left: 1.45em;
    color: #4d4038;
}

.guide-section li { margin: 8px 0; padding-left: 4px; }

.guide-section li::marker { color: var(--guide-accent); font-weight: 700; }

.guide-index {
    position: sticky;
    top: 98px;
    padding: 16px 0 0 20px;
    border-left: 1px solid var(--guide-line);
}

.guide-index strong {
    display: block;
    margin-bottom: 12px;
    color: var(--guide-ink);
    font-size: 14px;
}

.guide-index a {
    display: block;
    padding: 7px 0;
    color: var(--guide-muted);
    font-size: 14px;
    line-height: 1.5;
    text-decoration: none;
}

.guide-index a:hover { color: var(--guide-accent); }

.guide-callout {
    padding: 18px 20px;
    margin: 24px 0;
    background: var(--guide-accent-soft);
    border-left: 3px solid var(--guide-accent);
}

.guide-callout strong { color: #863d0d; }
.guide-callout p { margin: 6px 0 0; color: #664b3b; }

.guide-callout.tip {
    background: #f0f6f1;
    border-left-color: var(--guide-green);
}

.guide-callout.tip strong { color: #3c654f; }
.guide-callout.tip p { color: #50685a; }

.guide-steps {
    display: grid;
    gap: 14px;
    margin: 24px 0;
}

.guide-step {
    display: grid;
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 14px;
    padding: 18px 20px;
    background: #fff;
    border: 1px solid var(--guide-line);
}

.guide-step-number {
    width: 32px;
    height: 32px;
    display: grid;
    place-items: center;
    color: var(--guide-accent);
    background: var(--guide-accent-soft);
    border: 1px solid #f0ceb5;
    border-radius: 50%;
    font: 700 13px/1 Consolas, monospace;
}

.guide-step h3 { margin: 0 0 5px; font-size: 18px; }
.guide-step p { margin: 0; font-size: 15px; }

.guide-table-wrap { overflow-x: auto; margin: 22px 0; border: 1px solid var(--guide-line); }

.guide-table {
    width: 100%;
    min-width: 620px;
    border-collapse: collapse;
    color: #493b33;
    font-size: 15px;
    line-height: 1.65;
    text-align: left;
}

.guide-table th {
    color: var(--guide-ink);
    background: #fff4ea;
    font-weight: 700;
}

.guide-table th,
.guide-table td {
    padding: 12px 14px;
    vertical-align: top;
    border-bottom: 1px solid var(--guide-line);
}

.guide-table tr:last-child td { border-bottom: 0; }

.guide-table td:first-child { min-width: 150px; color: var(--guide-ink); font-weight: 700; }

.guide-figure {
    margin: 24px 0;
    border: 1px solid var(--guide-line);
    background: #fff;
}

.guide-figure img { display: block; width: 100%; height: auto; }
.guide-figure figcaption { padding: 10px 14px; color: var(--guide-muted); font-size: 13px; }

.guide-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 24px;
}

.guide-link {
    display: inline-flex;
    min-height: 42px;
    padding: 8px 15px;
    align-items: center;
    color: #fff;
    background: var(--guide-accent);
    border-radius: 4px;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
}

.guide-link.secondary { color: var(--guide-accent); background: var(--guide-accent-soft); }
.guide-link:hover { color: #fff; background: var(--guide-ink); }
.guide-link.secondary:hover { color: #fff; }

.guide-footer {
    padding: 30px 24px;
    color: var(--guide-muted);
    background: #fffaf6;
    border-top: 1px solid var(--guide-line);
    font-size: 14px;
}

.guide-footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 28px; }
.guide-footer strong { color: var(--guide-ink); }
.guide-footer a { color: var(--guide-muted); }

.guide-catalog {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.guide-catalog article {
    padding: 22px;
    border: 1px solid var(--guide-line);
    background: #fff;
}

.guide-catalog h2 { margin: 0 0 8px; font-size: 21px; }
.guide-catalog p { margin: 0 0 14px; color: var(--guide-muted); font-size: 15px; }
.guide-catalog a { font-size: 14px; font-weight: 700; }

@media (max-width: 900px) {
    .guide-layout { grid-template-columns: 1fr; gap: 30px; }
    .guide-index { position: static; order: -1; padding: 0 0 14px; border-left: 0; border-bottom: 1px solid var(--guide-line); }
    .guide-index a { display: inline-block; margin-right: 18px; }
}

@media (max-width: 640px) {
    body { font-size: 16px; }
    .guide-main { padding-top: 68px; }
    .guide-hero { padding: 46px 16px 40px; }
    .guide-hero-inner, .guide-layout, .guide-footer-inner { width: min(100% - 32px, 1180px); }
    .guide-lead { font-size: 18px; }
    .guide-layout { padding-top: 34px; padding-bottom: 54px; }
    .guide-section { padding-bottom: 34px; margin-bottom: 34px; }
    .guide-section h2 { font-size: 25px; }
    .guide-step { grid-template-columns: 32px minmax(0, 1fr); gap: 10px; padding: 15px; }
    .guide-step-number { width: 28px; height: 28px; font-size: 12px; }
    .guide-step p, .guide-table { font-size: 14px; }
    .guide-catalog { grid-template-columns: 1fr; }
}