/* =========================================
   CAU 2026 答辩前评审 9 案提问汇总
   基于 harvestrobot-web / diffrobot-web 视觉语言
   ========================================= */

:root {
    --color-bg: #fafaf8;
    --color-surface: #f3f3ee;
    --color-surface-2: #ececdf;
    --color-ink: #0a0a0a;
    --color-ink-soft: #3d3d3d;
    --color-ink-soft-2: #5a5a5a;
    --color-muted: #8a8a8a;
    --color-line: #e6e6e0;
    --color-line-soft: #efefe8;
    --color-accent: #1f3a2e;
    --color-accent-soft: #e8efe9;
    --color-accent-bright: #5fa777;
    --color-warn: #8b5a2b;
    --color-warn-soft: #f5ecdb;
    --color-danger: #8b2c2c;
    --color-danger-soft: #f5dfdf;
    --color-info: #2c5282;
    --color-info-soft: #e3edf6;

    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
        sans-serif;
    --font-serif: "Noto Serif SC", "Songti SC", "STSong", Georgia,
        "Times New Roman", serif;
    --font-mono: "SF Mono", "Menlo", "Consolas", "Liberation Mono", monospace;

    --radius-sm: 6px;
    --radius-md: 10px;
    --max-width: 1200px;
    --content-width: 860px;
}

/* --- Reset / base --- */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img, svg { display: block; max-width: 100%; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
    font-family: var(--font-sans);
    color: var(--color-ink);
    background: var(--color-bg);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: "kern", "liga";
    font-size: 16px;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: opacity 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
a:hover {
    opacity: 0.78;
    border-bottom-color: var(--color-accent);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.005em;
    line-height: 1.4;
    color: var(--color-ink);
}

p { margin: 0 0 1em; }

strong { font-weight: 600; color: var(--color-ink); }

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 32px;
}
.container-narrow {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0 32px;
}

/* --- Header --- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(250, 250, 248, 0.94);
    backdrop-filter: saturate(180%) blur(12px);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--color-line);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
    gap: 24px;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-ink);
    border-bottom: none;
}
.brand:hover { opacity: 1; }
.brand-mark {
    width: 8px;
    height: 22px;
    background: var(--color-accent);
    border-radius: 2px;
}
.header-nav a {
    margin-left: 18px;
    font-size: 0.9rem;
    color: var(--color-ink-soft);
}

/* --- Hero --- */
.hero {
    padding: 72px 0 48px;
    background:
        radial-gradient(ellipse at 85% -10%, var(--color-accent-soft), transparent 55%),
        var(--color-bg);
    border-bottom: 1px solid var(--color-line);
}
.hero-eyebrow {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--color-accent);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    margin-bottom: 16px;
    padding: 4px 10px;
    background: var(--color-accent-soft);
    border-radius: var(--radius-sm);
}
.hero h1 {
    font-family: var(--font-serif);
    font-size: 2.4rem;
    font-weight: 600;
    color: var(--color-ink);
    margin: 0 0 12px;
    letter-spacing: -0.01em;
    line-height: 1.25;
}
.hero-subtitle {
    color: var(--color-ink-soft);
    font-size: 1.05rem;
    margin: 0 0 24px;
}
.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 24px;
    color: var(--color-muted);
    font-size: 0.88rem;
}
.hero-meta span strong {
    color: var(--color-ink-soft);
    font-weight: 500;
    margin-right: 4px;
}

/* --- Section --- */
section {
    padding: 56px 0;
}
section + section {
    border-top: 1px solid var(--color-line-soft);
}
.section-eyebrow {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-accent);
    letter-spacing: 0.16em;
    text-transform: uppercase;
    margin: 0 0 8px;
}
.section-heading {
    font-family: var(--font-serif);
    font-size: 1.7rem;
    font-weight: 600;
    margin: 0 0 12px;
    color: var(--color-ink);
}
.section-desc {
    color: var(--color-ink-soft);
    margin: 0 0 32px;
    max-width: 720px;
}

/* --- Index page case groups --- */
.degree-group {
    margin-bottom: 56px;
}
.degree-title {
    font-family: var(--font-serif);
    font-size: 1.35rem;
    font-weight: 600;
    margin: 0 0 6px;
    color: var(--color-ink);
    display: flex;
    align-items: baseline;
    gap: 12px;
}
.degree-badge {
    display: inline-block;
    background: var(--color-accent);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 500;
    padding: 3px 10px;
    border-radius: 999px;
    letter-spacing: 0.06em;
    font-family: var(--font-sans);
}
.degree-badge.degree-doctor {
    background: var(--color-accent);
}
.degree-badge.degree-academic {
    background: var(--color-info);
}
.degree-badge.degree-professional {
    background: var(--color-accent-bright);
}
.degree-desc {
    color: var(--color-muted);
    margin: 0 0 18px;
    font-size: 0.92rem;
}

/* --- Case table --- */
.case-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    overflow: hidden;
    font-size: 0.92rem;
}
.case-table thead th {
    background: var(--color-surface);
    color: var(--color-ink-soft);
    font-weight: 500;
    text-align: left;
    padding: 12px 14px;
    border-bottom: 1px solid var(--color-line);
    font-size: 0.85rem;
    letter-spacing: 0.02em;
}
.case-table tbody td {
    padding: 14px;
    border-bottom: 1px solid var(--color-line-soft);
    vertical-align: middle;
}
.case-table tbody tr:last-child td {
    border-bottom: none;
}
.case-table tbody tr:hover td {
    background: var(--color-line-soft);
}
.case-table td.col-author { font-weight: 500; }
.case-table td.col-topic { color: var(--color-ink-soft); }
.case-table td.col-pages,
.case-table td.col-questions { font-variant-numeric: tabular-nums; color: var(--color-muted); white-space: nowrap; }
.case-table td.col-mentor { color: var(--color-ink-soft); font-size: 0.88rem; white-space: nowrap; }
.case-table td.col-links { text-align: right; white-space: nowrap; }
.case-link {
    display: inline-block;
    padding: 5px 11px;
    margin-left: 4px;
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    border-bottom: none;
    border: 1px solid var(--color-line);
    background: #fff;
    color: var(--color-ink-soft);
    transition: all 0.18s ease;
}
.case-link.primary {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}
.case-link.primary:hover {
    background: #2c5240;
    border-color: #2c5240;
    opacity: 1;
}
.case-link.secondary:hover {
    background: var(--color-accent-soft);
    border-color: var(--color-accent);
    color: var(--color-accent);
    opacity: 1;
}

/* --- Usage notes (bottom of index) --- */
.usage-notes {
    background: var(--color-surface);
    padding: 32px 36px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-line);
    margin-top: 24px;
}
.usage-notes h2 {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    margin: 0 0 16px;
}
.usage-notes ol {
    padding-left: 22px;
    margin: 0;
    color: var(--color-ink-soft);
    font-size: 0.95rem;
}
.usage-notes ol li {
    margin-bottom: 10px;
}

/* --- Question detail page --- */
.back-nav {
    padding: 18px 0;
    border-bottom: 1px solid var(--color-line-soft);
    font-size: 0.92rem;
}
.back-nav a {
    margin-right: 20px;
    color: var(--color-ink-soft);
    border-bottom: none;
}
.back-nav a:hover {
    color: var(--color-accent);
    opacity: 1;
}

.case-meta {
    background: var(--color-surface);
    padding: 22px 28px;
    border-radius: var(--radius-md);
    margin: 0 0 36px;
    border-left: 4px solid var(--color-accent);
}
.case-meta dl {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 6px 22px;
    margin: 0;
    font-size: 0.93rem;
}
.case-meta dt {
    color: var(--color-muted);
    font-weight: 500;
}
.case-meta dd {
    color: var(--color-ink-soft);
    margin: 0;
    font-weight: 500;
}

/* --- Question card --- */
.question-card {
    margin: 0 0 64px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--color-line-soft);
}
.question-card:last-of-type {
    border-bottom: none;
}
.question-title {
    font-family: var(--font-serif);
    font-size: 1.55rem;
    font-weight: 600;
    margin: 0 0 6px;
    color: var(--color-ink);
    line-height: 1.4;
    scroll-margin-top: 80px;
}
.question-type {
    display: inline-block;
    font-size: 0.78rem;
    color: var(--color-ink-soft);
    margin-bottom: 22px;
}
.question-type .tag {
    display: inline-block;
    padding: 2px 8px;
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-line);
    font-weight: 500;
    margin-right: 6px;
}
.question-type .tag.tag-show { background: #f0f5fc; border-color: #c7daee; color: var(--color-info); }
.question-type .tag.tag-hard { background: #f8e8e8; border-color: #e6c5c5; color: var(--color-danger); }
.question-type .tag.tag-edge { background: var(--color-warn-soft); border-color: #d8c5a4; color: var(--color-warn); }

/* The 5 blocks */
.q-block {
    margin: 0 0 18px;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    line-height: 1.78;
}
.q-block-label {
    font-size: 0.76rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin: 0 0 8px;
    display: block;
}
.q-block-locate {
    background: #f7f7f3;
    border-left: 3px solid var(--color-muted);
}
.q-block-locate .q-block-label { color: var(--color-muted); }

.q-block-context {
    background: var(--color-info-soft);
    border-left: 3px solid var(--color-info);
}
.q-block-context .q-block-label { color: var(--color-info); }

.q-block-main {
    background: var(--color-accent);
    color: #fff;
    border-left: none;
    padding: 22px 24px;
    font-size: 1.05rem;
    font-weight: 500;
}
.q-block-main .q-block-label {
    color: rgba(255, 255, 255, 0.78);
    margin-bottom: 10px;
}
.q-block-main p,
.q-block-main { color: #fff; }
.q-block-main strong { color: #fff; }

.q-block-follow {
    background: #fbf8f1;
    border-left: 3px solid var(--color-warn);
}
.q-block-follow .q-block-label { color: var(--color-warn); }

.q-block-expect {
    background: var(--color-accent-soft);
    border-left: 3px solid var(--color-accent);
}
.q-block-expect .q-block-label { color: var(--color-accent); }

.q-block ul, .q-block ol {
    padding-left: 22px;
    margin: 6px 0;
}
.q-block li {
    margin-bottom: 5px;
}
.q-block li:last-child { margin-bottom: 0; }
.q-block p:last-child { margin-bottom: 0; }
.q-block-main p { margin-bottom: 0; }

.evidence-link {
    margin: 12px 0 0;
    padding: 12px 16px;
    background: #fff;
    border: 1px dashed var(--color-line);
    border-radius: var(--radius-sm);
    font-size: 0.92rem;
    color: var(--color-ink-soft);
}
.evidence-link a {
    color: var(--color-accent);
    font-weight: 500;
}
.evidence-link a::before {
    content: "→ ";
    margin-right: 2px;
}

/* --- Evidence detail page --- */
.evidence-section {
    margin: 0 0 60px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--color-line-soft);
}
.evidence-section:last-of-type {
    border-bottom: none;
}
.evidence-section h2 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0 0 18px;
    color: var(--color-ink);
    line-height: 1.4;
    scroll-margin-top: 80px;
    padding-left: 16px;
    border-left: 4px solid var(--color-accent);
}
.evidence-section h3 {
    font-family: var(--font-serif);
    font-size: 1.15rem;
    font-weight: 600;
    margin: 28px 0 12px;
    color: var(--color-ink);
}
.evidence-section h4 {
    font-size: 1rem;
    font-weight: 600;
    margin: 18px 0 8px;
    color: var(--color-ink-soft);
}

.evidence-section p { margin-bottom: 1em; }
.evidence-section ul, .evidence-section ol {
    padding-left: 22px;
    margin: 0 0 1em;
}
.evidence-section li { margin-bottom: 6px; }

/* tables in evidence */
.evidence-section table,
.case-meta + section table,
.q-block table {
    width: 100%;
    border-collapse: collapse;
    margin: 14px 0;
    font-size: 0.9rem;
    background: #fff;
}
.evidence-section table th,
.evidence-section table td {
    padding: 9px 12px;
    text-align: left;
    border: 1px solid var(--color-line);
    vertical-align: top;
}
.evidence-section table th {
    background: var(--color-surface);
    font-weight: 500;
    color: var(--color-ink-soft);
}
.evidence-section table tbody tr:nth-child(even) td {
    background: #fafaf6;
}

/* blockquote — for embedded original text excerpts */
.evidence-section blockquote {
    margin: 12px 0;
    padding: 12px 18px;
    background: var(--color-surface);
    border-left: 3px solid var(--color-line);
    color: var(--color-ink-soft);
    font-size: 0.93rem;
}
.evidence-section blockquote p:last-child { margin-bottom: 0; }

/* inline code */
code {
    font-family: var(--font-mono);
    font-size: 0.88em;
    background: var(--color-line-soft);
    padding: 1px 5px;
    border-radius: 3px;
}

/* horizontal rule */
hr {
    border: none;
    border-top: 1px solid var(--color-line);
    margin: 32px 0;
}

/* --- Footer --- */
.site-footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-line);
    padding: 36px 0 28px;
    color: var(--color-muted);
    font-size: 0.85rem;
    margin-top: 64px;
}
.footer-inner {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}
.site-footer a { color: var(--color-ink-soft); border-bottom: none; }
.site-footer a:hover { color: var(--color-accent); opacity: 1; }

/* --- Responsive --- */
@media (max-width: 1000px) {
    .container, .container-narrow { padding: 0 24px; }
    .hero h1 { font-size: 1.95rem; }
    .case-table { font-size: 0.88rem; }
    .case-table tbody td { padding: 10px 10px; }
    .case-meta dl { grid-template-columns: 1fr; gap: 2px 12px; }
    .case-meta dt { font-size: 0.8rem; margin-top: 8px; }
}

@media (max-width: 700px) {
    body { font-size: 15px; }
    .container, .container-narrow { padding: 0 18px; }
    .hero { padding: 52px 0 36px; }
    .hero h1 { font-size: 1.6rem; }
    .hero-subtitle { font-size: 0.96rem; }
    section { padding: 40px 0; }
    .section-heading { font-size: 1.4rem; }
    .question-title { font-size: 1.25rem; }
    .case-table thead { display: none; }
    .case-table, .case-table tbody, .case-table tr, .case-table td {
        display: block;
        width: 100%;
    }
    .case-table tbody tr {
        margin-bottom: 18px;
        border: 1px solid var(--color-line);
        border-radius: var(--radius-sm);
        padding: 8px 4px;
        background: #fff;
    }
    .case-table tbody td {
        border: none;
        padding: 5px 12px;
    }
    .case-table td.col-author {
        font-size: 1.05rem;
        font-weight: 600;
        padding-bottom: 6px;
    }
    .case-table td.col-author::before { content: ""; }
    .case-table td.col-topic::before { content: "主题: "; color: var(--color-muted); font-size: 0.85rem; }
    .case-table td.col-pages::before { content: "页数: "; color: var(--color-muted); font-size: 0.85rem; }
    .case-table td.col-questions::before { content: "提问: "; color: var(--color-muted); font-size: 0.85rem; }
    .case-table td.col-mentor::before { content: "导师: "; color: var(--color-muted); font-size: 0.85rem; }
    .case-table td.col-links {
        text-align: left;
        padding-top: 10px;
        border-top: 1px solid var(--color-line-soft);
        margin-top: 6px;
    }
    .case-link { margin: 4px 4px 0 0; }
    .q-block { padding: 14px 16px; }
    .q-block-main { padding: 18px 18px; font-size: 1rem; }
    .case-meta { padding: 16px 18px; }
}

/* --- Print --- */
@media print {
    body { background: #fff; font-size: 11pt; }
    .site-header, .back-nav, .site-footer { display: none; }
    .hero { padding: 0 0 16pt; background: none; border: none; }
    .hero h1 { font-size: 20pt; }
    section { padding: 16pt 0; border-top-color: #ccc; }
    .q-block, .case-meta, .usage-notes, .case-table {
        break-inside: avoid;
        box-shadow: none;
    }
    .q-block-main { background: #f0f0f0; color: #000; border-left: 4px solid #333; }
    .q-block-main p, .q-block-main strong, .q-block-main .q-block-label { color: #000; }
    .case-link { border: 1px solid #999; color: #000; }
    a { color: #000; border-bottom: none; }
    .evidence-link { background: #f5f5f5; }
}