:root {
    --brand: #4f46e5;
    --brand-dark: #3730a3;
    --brand-soft: #eef2ff;
    --ink: #111827;
    --ink-2: #374151;
    --muted: #6b7280;
    --line: #e5e7eb;
    --surface: #ffffff;
    --surface-2: #f8fafc;
    --canvas: #f6f7fb;
    --success: #059669;
    --warning: #b45309;
    --danger: #dc2626;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, .04), 0 2px 8px rgba(15, 23, 42, .04);
    --shadow-md: 0 18px 40px rgba(15, 23, 42, .09);
    --shadow-lg: 0 28px 70px rgba(15, 23, 42, .16);
    --radius: 14px;
    --radius-lg: 22px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--ink);
    background: var(--canvas);
    font-family: Inter, "SF Pro Display", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, textarea { font: inherit; }
.container { width: min(1180px, calc(100% - 40px)); max-width: none; margin: 0 auto; padding: 0; }

.site-nav, nav {
    position: sticky;
    top: 0;
    z-index: 90;
    height: 68px;
    border-bottom: 1px solid rgba(229, 231, 235, .86);
    background: rgba(255, 255, 255, .9);
    backdrop-filter: blur(18px);
}
.site-nav .container, nav .container { height: 100%; display: flex; justify-content: space-between; align-items: center; }
.site-brand, nav .logo { color: var(--ink); font-size: 1.08rem; font-weight: 780; letter-spacing: -.035em; }
.site-brand-mark { color: var(--brand); }
.site-nav-links, nav .nav-links { display: flex; align-items: center; gap: 5px; }
.site-nav-links a, nav .nav-links a { padding: 9px 13px; border-radius: 9px; color: var(--ink-2); font-size: .9rem; font-weight: 600; transition: .18s ease; }
.site-nav-links a:hover, nav .nav-links a:hover { color: var(--brand); background: var(--brand-soft); text-decoration: none; }
.site-nav-links a.active { color: var(--brand); background: var(--brand-soft); }

.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    min-height: 38px;
    padding: 9px 16px;
    border: 1px solid transparent;
    border-radius: 10px;
    font-weight: 700;
    line-height: 1;
    cursor: pointer;
    transition: transform .16s ease, box-shadow .16s ease, background .16s ease, border-color .16s ease;
}
.btn:hover { transform: translateY(-1px); text-decoration: none; }
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 7px 16px rgba(79, 70, 229, .18); }
.btn-primary:hover { background: var(--brand-dark); color: #fff; }
.btn-secondary { background: #fff; color: var(--ink-2); border-color: var(--line); }
.btn-secondary:hover { color: var(--brand); border-color: #c7d2fe; background: var(--brand-soft); }
.btn-success { background: #ecfdf5; color: var(--success); border-color: #a7f3d0; }
.btn-warning { background: #fffbeb; color: var(--warning); border-color: #fde68a; }
.btn-danger { background: #fff; color: var(--danger); border-color: #fecaca; }
.btn-danger:hover { background: #fef2f2; }
.btn-sm { min-height: 32px; padding: 7px 11px; font-size: .78rem; }
.badge { display: inline-flex; align-items: center; padding: 5px 9px; border-radius: 999px; font-size: .72rem; font-weight: 700; letter-spacing: .01em; }
.badge-published { background: #ecfdf5; color: #047857; }
.badge-draft { background: #fff7ed; color: #c2410c; }
.page-kicker { margin-bottom: 7px; color: var(--brand); font-size: .72rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }

.markdown-body { color: #273244; font-size: 1.02rem; line-height: 1.9; }
.markdown-body h1, .markdown-body h2, .markdown-body h3, .markdown-body h4 { color: var(--ink); letter-spacing: -.03em; line-height: 1.35; }
.markdown-body h1, .markdown-body h2 { border-bottom-color: var(--line); }
.markdown-body blockquote { border-left-color: var(--brand); background: var(--brand-soft); color: #4b5563; border-radius: 0 10px 10px 0; }
.markdown-body code { background: #f1f5f9; color: #be123c; }
.markdown-body pre { overflow-x: auto; border: 1px solid #1f2937; border-radius: 12px; background: #111827; box-shadow: inset 0 1px rgba(255,255,255,.06); }
.markdown-body pre code { color: #d1d5db; }
.markdown-body .mermaid, .markdown-body .mermaid-rendered { display: block; margin: 1.5em 0; padding: 24px; overflow-x: auto; border: 1px solid #e2e8f0; border-radius: 14px; background: #fff; color: var(--ink); text-align: center; box-shadow: var(--shadow-sm); }
.markdown-body .mermaid svg { display: block; max-width: 100%; height: auto; margin: 0 auto; }
.markdown-body .mermaid text, .markdown-body .mermaid .messageText, .markdown-body .mermaid .labelText { fill: #111827 !important; color: #111827 !important; }
.markdown-body .mermaid .messageLine0, .markdown-body .mermaid .messageLine1, .markdown-body .mermaid .actor-line { stroke: #475569 !important; }
.markdown-body pre:has(> code.language-mermaid), .markdown-body pre:has(.mermaid), .markdown-body pre:has(> svg), .markdown-body pre.mermaid-source { padding: 24px !important; border-color: #e2e8f0 !important; background: #fff !important; color: var(--ink) !important; box-shadow: var(--shadow-sm) !important; }
.markdown-body pre > code.language-mermaid { padding: 0 !important; background: transparent !important; color: var(--ink) !important; }
.markdown-body table { overflow: hidden; border-radius: 10px; }
.markdown-body th { background: #f8fafc; }
.markdown-body img { max-width: 100%; height: auto; border: 1px solid var(--line); border-radius: 14px; }

/* Home */
.page-home { min-height: 100vh; background: var(--canvas); }
.home-shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding: 72px 0; }
.home-eyebrow { display: inline-flex; padding: 7px 10px; border-radius: 8px; color: var(--brand); background: var(--brand-soft); font-size: .72rem; font-weight: 800; letter-spacing: .08em; }
.home-hero { display: flex; justify-content: space-between; align-items: flex-end; gap: 32px; margin: 20px 0 52px; }
.home-hero h1 { max-width: 790px; margin: 0 0 14px; font-size: clamp(2.5rem, 5vw, 4.35rem); line-height: 1.08; letter-spacing: -.065em; }
.home-hero p { max-width: 660px; margin: 0; color: var(--muted); font-size: 1rem; line-height: 1.8; }
.home-date { flex: 0 0 auto; color: var(--muted); font-size: .82rem; white-space: nowrap; }
.home-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.home-card { position: relative; min-height: 285px; padding: 28px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); color: var(--ink); transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease; }
.home-card:hover { transform: translateY(-5px); border-color: #c7d2fe; box-shadow: var(--shadow-md); color: var(--ink); text-decoration: none; }
.home-card::after { content: ""; position: absolute; top: -85px; right: -75px; width: 220px; height: 220px; border-radius: 50%; background: var(--card-glow, #eef2ff); opacity: .72; }
.home-card-icon, .home-card h2, .home-card p, .home-card span { position: relative; z-index: 1; }
.home-card-icon { font-size: 1.75rem; }
.home-card h2 { margin: 62px 0 10px; font-size: 1.5rem; letter-spacing: -.04em; }
.home-card p { max-width: 390px; margin: 0; color: var(--muted); font-size: .9rem; line-height: 1.75; }
.home-card span { display: inline-block; margin-top: 24px; color: var(--brand); font-size: .86rem; font-weight: 750; }
.home-card--primary { --card-glow: #e0e7ff; background: linear-gradient(140deg, #fff 55%, #f3f5ff); }
.home-card--ai { --card-glow: #dbeafe; }
.home-card--practice { --card-glow: #ede9fe; }
.home-card--lab { --card-glow: #ccfbf1; }
.home-footnote { margin: 20px 0 0; color: var(--muted); font-size: .82rem; }

/* Market */
.page-market .market-hero { position: relative; overflow: hidden; padding: 74px 0 66px; background: #111827; color: #fff; }
.page-market .market-hero::after { content: ""; position: absolute; width: 460px; height: 460px; top: -245px; right: 8%; border-radius: 50%; background: radial-gradient(circle, rgba(129,140,248,.62), transparent 66%); }
.page-market .market-hero .container { position: relative; z-index: 1; }
.page-market .market-hero .page-kicker { color: #a5b4fc; }
.page-market .market-hero h1 { max-width: 650px; margin: 0; font-size: clamp(2.25rem, 5vw, 3.7rem); letter-spacing: -.06em; line-height: 1.1; }
.page-market .market-hero p { max-width: 520px; margin: 15px 0 0; color: #cbd5e1; line-height: 1.75; }
.page-market .market-content { padding: 38px 0 76px; }
.page-market .market-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 22px; }
.page-market .market-toolbar h2 { font-size: 1.08rem; letter-spacing: -.02em; }
.page-market .market-toolbar span { color: var(--muted); font-size: .82rem; }
.page-market .curriculum-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(285px, 1fr)); gap: 16px; }
.page-market .curriculum-card { display: flex; min-height: 220px; padding: 23px; flex-direction: column; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; color: var(--ink); box-shadow: var(--shadow-sm); transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease; }
.page-market .curriculum-card:hover { transform: translateY(-4px); border-color: #c7d2fe; box-shadow: var(--shadow-md); color: var(--ink); text-decoration: none; }
.page-market .curriculum-card .tag { align-self: flex-start; margin-bottom: 18px; }
.page-market .tag-market { background: var(--brand-soft); color: var(--brand-dark); }
.page-market .tag-custom { background: #ecfdf5; color: #047857; }
.page-market .curriculum-card h3 { margin: 0 0 10px; font-size: 1.08rem; line-height: 1.45; letter-spacing: -.018em; }
.page-market .curriculum-card p { display: -webkit-box; overflow: hidden; margin: 0; -webkit-line-clamp: 3; -webkit-box-orient: vertical; color: var(--muted); font-size: .87rem; line-height: 1.7; }
.page-market .curriculum-card .meta { margin-top: auto; padding-top: 18px; color: #94a3b8; font-size: .76rem; }
.page-market .empty-state { padding: 76px 20px; border: 1px dashed #cbd5e1; border-radius: var(--radius-lg); background: rgba(255,255,255,.56); color: var(--muted); text-align: center; }
.page-market .empty-state .icon { margin-bottom: 12px; font-size: 2.2rem; }

/* Manage */
.page-manage .container.manage-shell { padding: 44px 0 72px; }
.page-manage .manage-header { display: flex; justify-content: space-between; align-items: center; gap: 20px; margin-bottom: 28px; }
.page-manage .manage-header h2 { margin: 0; font-size: clamp(1.7rem, 4vw, 2.2rem); letter-spacing: -.045em; }
.page-manage .manage-actions { display: flex; gap: 10px; }
.page-manage .tabs { display: flex; gap: 6px; margin-bottom: 22px; padding: 5px; border: 1px solid var(--line); border-radius: 12px; background: #eef1f6; }
.page-manage .tab { padding: 9px 16px; border: 0; border-radius: 8px; color: var(--muted); font-size: .87rem; font-weight: 650; cursor: pointer; transition: .18s ease; }
.page-manage .tab.active { color: var(--ink); background: #fff; box-shadow: var(--shadow-sm); }
.page-manage .tab-content { display: none; }
.page-manage .tab-content.active { display: block; }
.page-manage .curriculum-row, .page-manage .post-card { display: flex; justify-content: space-between; align-items: center; gap: 24px; margin-bottom: 10px; padding: 21px 22px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow-sm); transition: border-color .18s ease, box-shadow .18s ease; }
.page-manage .curriculum-row:hover, .page-manage .post-card:hover { border-color: #c7d2fe; box-shadow: 0 8px 20px rgba(15,23,42,.05); }
.page-manage .curriculum-row .info h3, .page-manage .post-card h3 { margin: 0; font-size: 1rem; line-height: 1.45; }
.page-manage .curriculum-row .info h3 a, .page-manage .post-card h3 a { color: var(--ink); }
.page-manage .curriculum-row .meta, .page-manage .post-card .meta { display: flex; align-items: center; gap: 8px 11px; flex-wrap: wrap; margin-top: 8px; color: var(--muted); font-size: .81rem; }
.page-manage .progress-mini { display: inline-flex; align-items: center; gap: 8px; }
.page-manage .progress-mini .bar { width: 84px; height: 5px; overflow: hidden; border-radius: 99px; background: #e9edf5; }
.page-manage .progress-mini .fill { height: 100%; border-radius: inherit; background: var(--brand); }
.page-manage .actions { display: flex; align-items: center; gap: 7px; flex-wrap: wrap; }
.page-manage .actions form { display: inline-flex; }
.page-manage .empty { padding: 72px 20px; border: 1px dashed #cbd5e1; border-radius: var(--radius); background: rgba(255,255,255,.65); color: var(--muted); text-align: center; }

/* Course reader */
.page-curriculum { background: #f4f6fb; }
.page-curriculum .reading-progress { position: fixed; inset: 0 0 auto; z-index: 120; height: 3px; pointer-events: none; }
.page-curriculum #readingProgressBar { width: 0; height: 100%; background: linear-gradient(90deg, var(--brand), #0ea5e9); box-shadow: 0 0 10px rgba(79,70,229,.4); transition: width .1s linear; }
.page-curriculum .page-layout { display: flex; min-height: 100vh; align-items: flex-start; }
.page-curriculum .sidebar { position: sticky; top: 0; width: 304px; height: 100vh; flex-shrink: 0; overflow-y: auto; padding: 0; border-right: 1px solid var(--line); background: rgba(255,255,255,.97); box-shadow: 8px 0 30px rgba(15,23,42,.025); }
.page-curriculum .sidebar-header { padding: 24px 18px 18px; border-bottom: 1px solid #f1f5f9; }
.page-curriculum .sidebar-header h2 { margin: 0; font-size: 1rem; line-height: 1.5; letter-spacing: -.015em; }
.page-curriculum .sidebar-header .goal { margin-top: 7px; color: var(--muted); line-height: 1.55; }
.page-curriculum .course-back { display: inline-flex; margin-bottom: 14px; color: var(--muted); font-size: .78rem; font-weight: 650; }
.page-curriculum .course-back:hover { color: var(--brand); text-decoration: none; }
.page-curriculum .directory-search-wrap { position: relative; margin-top: 16px; }
.page-curriculum .directory-search { width: 100%; height: 38px; padding: 0 48px 0 13px; border: 1px solid var(--line); border-radius: 10px; outline: none; background: #f8fafc; color: var(--ink); font-size: .82rem; transition: .18s ease; }
.page-curriculum .directory-search:focus { border-color: #a5b4fc; background: #fff; box-shadow: 0 0 0 3px rgba(79,70,229,.1); }
.page-curriculum .search-count { position: absolute; top: 50%; right: 10px; transform: translateY(-50%); color: var(--muted); font-size: .7rem; }
.page-curriculum .chapter-list { padding: 10px 12px 24px; }
.page-curriculum .dir-group { margin: 4px 0; border: 0; }
.page-curriculum .dir-group-header { display: flex; align-items: center; gap: 8px; padding: 10px 11px; border-radius: 9px; cursor: pointer; transition: .15s ease; }
.page-curriculum .dir-group-header:hover, .page-curriculum .dir-group-header.active { background: var(--brand-soft); }
.page-curriculum .dir-icon { display: grid; width: 20px; height: 20px; place-items: center; border-radius: 5px; background: #e9edf5; color: var(--brand); font-size: .68rem; font-weight: 800; }
.page-curriculum .dir-name { flex: 1; overflow: hidden; font-size: .84rem; font-weight: 650; text-overflow: ellipsis; white-space: nowrap; }
.page-curriculum .dir-count, .page-curriculum .dir-arrow { color: var(--muted); font-size: .7rem; }
.page-curriculum .dir-article-item { display: flex; align-items: center; gap: 9px; margin: 2px 0; padding: 8px 10px 8px 38px; border-radius: 8px; cursor: pointer; transition: .15s ease; }
.page-curriculum .dir-article-item:hover, .page-curriculum .dir-article-item.active { background: var(--brand-soft); }
.page-curriculum .dir-article-item.active { box-shadow: inset 3px 0 var(--brand); }
.page-curriculum .dir-article-num { display: grid; width: 19px; height: 19px; flex-shrink: 0; place-items: center; border-radius: 50%; background: #eef2f7; color: var(--muted); font-size: .65rem; font-weight: 750; }
.page-curriculum .dir-article-item.active .dir-article-num { background: var(--brand); color: #fff; }
.page-curriculum .dir-article-title { overflow: hidden; color: var(--ink-2); font-size: .8rem; line-height: 1.4; text-overflow: ellipsis; white-space: nowrap; }
.page-curriculum .main-content { flex: 1 1 auto; width: auto; max-width: 1080px; min-width: 0; margin: 0 auto; padding: 32px 42px 80px; }
.page-curriculum .stats-overview { display: flex; gap: 14px; margin-bottom: 20px; }
.page-curriculum .stats-card { display: flex; flex: 1; align-items: center; gap: 13px; padding: 17px 20px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow-sm); }
.page-curriculum .stats-icon { font-size: 1.35rem; }
.page-curriculum .stats-number { font-size: 1.3rem; font-weight: 780; }
.page-curriculum .stats-label { color: var(--muted); font-size: .77rem; }
.page-curriculum .welcome-message, .page-curriculum .pending-card { padding: 64px 36px; border: 1px dashed #cbd5e1; border-radius: var(--radius-lg); background: rgba(255,255,255,.66); color: var(--muted); text-align: center; }
.page-curriculum .article-card { padding: clamp(34px, 5vw, 62px); border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-sm); }
.page-curriculum .article-card .article-header { margin-bottom: 30px; padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.page-curriculum .article-card .chapter-badge { display: inline-flex; margin-bottom: 11px; padding: 5px 10px; border-radius: 99px; background: var(--brand-soft); color: var(--brand-dark); font-size: .73rem; font-weight: 750; }
.page-curriculum .article-card h1 { margin: 0; font-size: clamp(1.65rem, 4vw, 2.25rem); line-height: 1.18; letter-spacing: -.04em; }
.page-curriculum .article-meta { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 12px; color: var(--muted); font-size: .78rem; }
.page-curriculum .markdown-body { max-width: 820px; margin: 0 auto; }
.page-curriculum .chapter-nav { display: flex; gap: 14px; margin-top: 46px; padding-top: 26px; border-top: 1px solid var(--line); }
.page-curriculum .chapter-nav .nav-card { display: flex; flex: 1; min-height: 78px; max-width: none; padding: 14px 16px; flex-direction: column; align-items: flex-start; gap: 4px; border: 1px solid var(--line); border-radius: 12px; background: #fff; color: var(--ink-2); }
.page-curriculum .chapter-nav .nav-card.next { align-items: flex-end; text-align: right; }
.page-curriculum .chapter-nav .nav-card:hover { border-color: #c7d2fe; background: var(--brand-soft); color: var(--brand); text-decoration: none; }
.page-curriculum .chapter-nav .nav-label { color: var(--muted); font-size: .7rem; font-weight: 650; }
.page-curriculum .chapter-nav .nav-title { color: var(--ink); font-size: .86rem; font-weight: 700; line-height: 1.4; }
.page-curriculum .chapter-complete { display: grid; flex: 1; min-height: 78px; padding: 14px 16px; place-items: center; border: 1px dashed #c7d2fe; border-radius: 12px; background: #fafaff; color: var(--muted); text-align: center; font-size: .82rem; }
.page-curriculum .right-toc { position: sticky; top: 0; width: 246px; height: 100vh; flex-shrink: 0; overflow-y: auto; padding: 34px 24px 32px 0; }
.page-curriculum .right-toc .toc-group-title { padding-bottom: 8px; color: #94a3b8; font-size: .7rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.page-curriculum .right-toc .toc-item { display: block; padding: 6px 10px; border-left: 2px solid #e5e7eb; color: var(--muted); font-size: .78rem; line-height: 1.45; }
.page-curriculum .right-toc .toc-item:hover, .page-curriculum .right-toc .toc-item.active { border-left-color: var(--brand); background: var(--brand-soft); color: var(--brand); text-decoration: none; }
.page-curriculum .right-toc .toc-item.toc-h2 { padding-left: 22px; }
.page-curriculum .right-toc .toc-item.toc-h3 { padding-left: 34px; }
.page-curriculum .right-toc .toc-item.toc-h4 { padding-left: 46px; }

/* Article */
.page-post .article-shell { width: min(880px, calc(100% - 40px)); margin: 38px auto 72px; padding: 0; }
.page-post .breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; color: var(--muted); font-size: .84rem; }
.page-post .post-detail { padding: clamp(28px, 5vw, 56px); border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-sm); }
.page-post .post-detail > h1 { margin: 0; font-size: clamp(1.8rem, 4vw, 2.7rem); line-height: 1.16; letter-spacing: -.045em; }
.page-post .post-detail .meta { margin: 14px 0 30px; padding-bottom: 20px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: .86rem; }
.page-post .back-link { display: inline-flex; margin-top: 20px; padding: 9px 13px; border: 1px solid var(--line); border-radius: 9px; background: #fff; color: var(--ink-2); }
.page-post .back-link:hover { border-color: #c7d2fe; background: var(--brand-soft); color: var(--brand); text-decoration: none; }

/* Editor */
.page-editor { height: 100vh; overflow: hidden; background: #fff; }
.page-editor #postForm { display: flex; height: 100%; flex-direction: column; }
.page-editor .top-bar { display: flex; height: 64px; align-items: center; justify-content: space-between; gap: 16px; padding: 0 22px; border-bottom: 1px solid var(--line); box-shadow: var(--shadow-sm); }
.page-editor .top-bar .left, .page-editor .top-bar .right { display: flex; align-items: center; gap: 12px; }
.page-editor .top-bar .left { min-width: 0; flex: 1; }
.page-editor .top-bar .logo { color: var(--ink); font-size: 1.05rem; font-weight: 780; }
.page-editor .top-bar .divider { width: 1px; height: 20px; background: var(--line); }
.page-editor .title-input { width: min(500px, 100%); border: 0; outline: none; color: var(--ink); background: transparent; font-size: 1.12rem; font-weight: 700; letter-spacing: -.02em; }
.page-editor .btn-save, .page-editor .btn-publish { min-height: 36px; padding: 8px 16px; border-radius: 9px; font-size: .84rem; font-weight: 700; cursor: pointer; }
.page-editor .btn-save { border: 1px solid var(--line); background: #fff; color: var(--ink-2); }
.page-editor .btn-save:hover { border-color: #c7d2fe; background: var(--brand-soft); color: var(--brand); }
.page-editor .btn-publish { border: 0; background: var(--brand); color: #fff; box-shadow: 0 7px 16px rgba(79,70,229,.18); }
.page-editor .btn-publish:hover { background: var(--brand-dark); }
.page-editor .btn-back { color: var(--muted); font-size: .82rem; font-weight: 650; }
.page-editor .btn-back:hover { color: var(--brand); text-decoration: none; }
.page-editor .toolbar { display: flex; height: 46px; align-items: center; gap: 2px; overflow-x: auto; padding: 0 18px; border-bottom: 1px solid var(--line); background: #f8fafc; }
.page-editor .toolbar button { position: relative; display: inline-flex; width: 32px; height: 32px; flex: 0 0 auto; align-items: center; justify-content: center; border: 0; border-radius: 7px; background: transparent; color: var(--ink-2); cursor: pointer; font-size: .82rem; font-weight: 700; }
.page-editor .toolbar button:hover { background: var(--brand-soft); color: var(--brand); }
.page-editor .toolbar .sep { width: 1px; height: 18px; flex: 0 0 auto; margin: 0 6px; background: var(--line); }
.page-editor .editor-area { display: flex; min-height: 0; flex: 1; overflow: hidden; }
.page-editor .toc-sidebar { width: 240px; flex-shrink: 0; border-right: 1px solid var(--line); background: #fafbfc; }
.page-editor .toc-header, .page-editor .pane-label { padding: 9px 20px; border-bottom: 1px solid var(--line); background: #f8fafc; color: var(--muted); font-size: .72rem; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; }
.page-editor .toc-list { height: calc(100% - 38px); overflow-y: auto; padding: 8px 0; }
.page-editor .toc-item { display: block; padding: 6px 15px; border-left: 3px solid transparent; color: var(--ink-2); font-size: .8rem; line-height: 1.5; text-decoration: none; }
.page-editor .toc-item:hover, .page-editor .toc-item.active { border-left-color: var(--brand); background: var(--brand-soft); color: var(--brand); }
.page-editor .toc-item.level-2 { padding-left: 28px; }.page-editor .toc-item.level-3 { padding-left: 40px; }.page-editor .toc-item.level-4 { padding-left: 52px; }
.page-editor .toc-empty { padding: 22px 16px; color: #94a3b8; font-size: .8rem; text-align: center; }
.page-editor .editor-pane, .page-editor .preview-pane { display: flex; min-width: 0; flex: 1; flex-direction: column; }
.page-editor .editor-pane { border-right: 1px solid var(--line); }
.page-editor #content, .page-editor #preview { min-height: 0; flex: 1; overflow-y: auto; padding: 30px; }
.page-editor #content { border: 0; outline: none; resize: none; color: var(--ink); background: #fff; font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace; font-size: .88rem; line-height: 1.8; }
.page-editor .modal-overlay { background: rgba(15,23,42,.58); backdrop-filter: blur(6px); }
.page-editor .modal { width: min(500px, calc(100vw - 32px)); border: 1px solid rgba(255,255,255,.5); border-radius: 18px; box-shadow: var(--shadow-lg); }

.markdown-body img[alt*="Excalidraw"] { display: block; width: 100%; max-width: 960px; margin: 1.6rem auto .7rem; padding: 10px; background: #f8fafc; box-shadow: var(--shadow-sm); }
.markdown-body blockquote:has(a[href$=".excalidraw"]), .markdown-body blockquote:has(a[href^="/excalidraw/edit"]) { display: flex; align-items: center; gap: 8px; margin: .7rem 0 1.8rem; padding: 10px 14px; border: 1px dashed #a5b4fc; border-left: 3px solid var(--brand); border-radius: 10px; background: #fafaff; font-size: .88rem; }
.markdown-body blockquote:has(a[href$=".excalidraw"]) p, .markdown-body blockquote:has(a[href^="/excalidraw/edit"]) p { margin: 0; }
.markdown-body blockquote:has(a[href$=".excalidraw"]) a, .markdown-body blockquote:has(a[href^="/excalidraw/edit"]) a { font-weight: 700; }

@media (max-width: 1100px) { .page-curriculum .right-toc { display: none !important; }.page-curriculum .main-content { max-width: none; } }
@media (max-width: 800px) {
    .container, .home-shell { width: min(100% - 28px, 1180px); }
    .site-nav, nav { height: auto; min-height: 62px; }.site-nav .container, nav .container { min-height: 62px; gap: 10px; }.site-nav-links, nav .nav-links { overflow-x: auto; }.site-nav-links a, nav .nav-links a { padding: 8px 9px; font-size: .8rem; white-space: nowrap; }
    .home-shell { padding: 50px 0; }.home-hero { display: block; margin-bottom: 36px; }.home-hero h1 { font-size: clamp(2.35rem, 11vw, 3.4rem); }.home-date { display: block; margin-top: 20px; }.home-grid { grid-template-columns: 1fr; }.home-card { min-height: 235px; }.home-card h2 { margin-top: 42px; }
    .page-market .market-hero { padding: 56px 0 50px; }.page-market .market-content { padding-top: 28px; }
    .page-manage .container.manage-shell { padding: 28px 0 56px; }.page-manage .manage-header, .page-manage .curriculum-row, .page-manage .post-card { align-items: flex-start; flex-direction: column; }.page-manage .manage-actions { width: 100%; }.page-manage .manage-actions .btn { flex: 1; }.page-manage .curriculum-row .actions, .page-manage .post-card .actions { width: 100%; }
    .page-curriculum .page-layout { display: block; }.page-curriculum .sidebar { position: relative; width: 100%; height: auto; }.page-curriculum .chapter-list { max-height: 42vh; overflow-y: auto; }.page-curriculum .main-content { padding: 20px 12px 56px; }.page-curriculum .stats-overview { gap: 10px; }.page-curriculum .stats-card { padding: 14px; }.page-curriculum .article-card { padding: 28px 20px; }.page-curriculum .chapter-nav { flex-direction: column; }
    .page-post .article-shell { width: calc(100% - 24px); margin-top: 20px; }.page-post .post-detail { padding: 24px 18px; }
    .page-editor .top-bar { height: auto; min-height: 64px; padding: 10px 14px; gap: 10px; }.page-editor .top-bar .left { min-width: 0; }.page-editor .top-bar .divider, .page-editor .btn-back { display: none; }.page-editor .top-bar .right { gap: 7px; }.page-editor .btn-save, .page-editor .btn-publish { padding: 8px 10px; }.page-editor .editor-area { display: block; overflow-y: auto; }.page-editor .toc-sidebar { display: none; }.page-editor .editor-pane, .page-editor .preview-pane { min-height: 50vh; }.page-editor .editor-pane { border-right: 0; border-bottom: 1px solid var(--line); }.page-editor #content, .page-editor #preview { padding: 20px; }
}
@media (max-width: 520px) { .site-brand, nav .logo { font-size: .98rem; }.site-nav-links a, nav .nav-links a { padding: 8px 6px; }.home-card { padding: 23px; }.page-market .market-toolbar { align-items: flex-start; flex-direction: column; }.page-manage .manage-actions { flex-direction: column; }.page-manage .manage-actions .btn { width: 100%; }.page-manage .tabs { width: 100%; }.page-manage .tab { flex: 1; text-align: center; } }

/* ==================== 简历制作页（/resume） ==================== */
.page-resume .resume-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding: 18px 0 4px; }
.page-resume .rs-title { flex: 1 1 240px; min-width: 180px; height: 40px; padding: 0 12px; border: 1px solid var(--line); border-radius: 10px; background: #fff; color: var(--ink); font-size: .95rem; }
.page-resume .rs-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.page-resume .rs-select { height: 40px; max-width: 250px; padding: 0 10px; border: 1px solid var(--line); border-radius: 10px; background: #fff; color: var(--ink-2); font-size: .85rem; }
.page-resume .rs-title:focus, .page-resume .rs-in:focus, .page-resume .rs-select:focus { outline: none; border-color: #a5b4fc; box-shadow: 0 0 0 3px rgba(79, 70, 229, .12); }
.page-resume .rs-hint { width: 100%; min-height: 18px; color: var(--success); font-size: .82rem; }
.page-resume .rs-hint-error { color: var(--danger); }

.page-resume .resume-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; padding: 14px 0 60px; }
.page-resume .resume-panel { padding: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-sm); }
.page-resume .rs-h { margin: 18px 0 10px; font-size: .95rem; color: var(--ink); }
.page-resume .rs-h:first-child { margin-top: 0; }
.page-resume .rs-tip { margin: 6px 0 0; color: var(--muted); font-size: .78rem; }
.page-resume .rs-tip-inline { color: var(--muted); font-size: .78rem; font-weight: 400; }

.page-resume .rs-in { width: 100%; height: 38px; padding: 0 11px; border: 1px solid var(--line); border-radius: 9px; background: #fff; color: var(--ink); font-size: .88rem; font-family: inherit; }
.page-resume textarea.rs-in { height: auto; padding: 9px 11px; line-height: 1.6; resize: vertical; }
.page-resume .rs-row { display: flex; gap: 10px; margin-bottom: 10px; }
.page-resume .rs-item .rs-half { display: inline-block; width: calc(50% - 5px); margin: 0 10px 10px 0; vertical-align: top; }
.page-resume .rs-item .rs-half + .rs-half { margin-right: 0; }

.page-resume .rs-item { margin-bottom: 12px; padding: 12px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface-2); }
.page-resume .rs-item-bar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.page-resume .rs-item-no { color: var(--muted); font-size: .78rem; font-weight: 700; letter-spacing: .04em; }
.page-resume .rs-add { width: 100%; margin: 4px 0 6px; padding: 9px; border: 1px dashed #c7d2fe; border-radius: 10px; background: #fbfbff; color: var(--brand); font-size: .84rem; cursor: pointer; }
.page-resume .rs-add:hover { background: var(--brand-soft); }

/* 预览区：白底黑字，与导出的 PDF 保持一致（不使用彩色修饰） */
.page-resume .rs-preview { padding: 26px 24px; border: 1px solid var(--line); border-radius: 12px; background: #fff; color: #000; font-size: .86rem; }
.page-resume .pv-name { font-size: 1.5rem; font-weight: 700; color: #000; }
.page-resume .pv-intention { margin-top: 2px; }
.page-resume .pv-contact { margin-top: 2px; font-size: .82rem; }
.page-resume .pv-contact span { margin-right: 14px; }
.page-resume .pv-h { margin: 16px 0 7px; padding-bottom: 3px; border-bottom: 1px solid #000; font-size: .9rem; font-weight: 700; }
.page-resume .pv-item { margin-bottom: 10px; }
.page-resume .pv-item-head { padding-bottom: 2px; }
.page-resume .pv-time { float: right; font-size: .78rem; }
.page-resume .pv-title { font-weight: 700; }
.page-resume .pv-sub { margin-left: 8px; }
.page-resume .pv-desc { margin: 4px 0 0; line-height: 1.75; }

@media (max-width: 900px) { .page-resume .resume-layout { grid-template-columns: 1fr; } }