/* ===========================================
 * 加密残卷 · 设计系统
 * 复古羊皮纸 · 暗色考古馆质感
 * =========================================== */

:root {
    --bg-base: #1A1411;            /* 深褐底 · 老书柜深处 */
    --bg-card: #221A14;            /* 卡片色 · 略浅 */
    --bg-quote: #2A1F18;           /* 引文块 */
    --text-main: #E8DDC8;          /* 米黄羊皮 · 主文字 */
    --text-soft: #A8957A;          /* 次要文字 · 旧墨褪色 */
    --text-dim: #6B5B45;           /* 极弱文字 · 标注 */
    --accent: #C9A864;             /* 古铜金 · 强调 */
    --accent-strong: #D4B57A;      /* 高光金 */
    --link: #B85C38;               /* 朱砂红 · 链接 */
    --link-hover: #D67050;         /* 朱砂红 · 悬停 */
    --rule: #3D2F22;               /* 分割线 */
    --rule-soft: #2D241B;          /* 软分割 */
    --warn: #8B6F47;               /* 警示框边 */
    --safe: #4A6B3D;               /* 安全绿（沉绿，非鲜绿）*/

    --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
    --font-deco:  "Noto Serif SC", "Source Han Serif SC", "Kaiti SC", "STKaiti", serif;

    --max-w: 760px;
    --max-w-wide: 1100px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
    background: var(--bg-base);
    color: var(--text-main);
    font-family: var(--font-serif);
    font-size: 17px;
    line-height: 1.85;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    /* 极淡的纸纹理 */
    background-image:
        radial-gradient(circle at 15% 30%, rgba(201, 168, 100, 0.025) 0px, transparent 50%),
        radial-gradient(circle at 85% 70%, rgba(184, 92, 56, 0.02) 0px, transparent 50%);
    background-attachment: fixed;
}

a {
    color: var(--link);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: color .2s, border-color .2s;
}
a:hover { color: var(--link-hover); border-bottom-color: currentColor; }

img { max-width: 100%; height: auto; display: block; }

/* ============ 顶栏 ============ */
.topbar {
    position: sticky; top: 0; z-index: 50;
    background: rgba(26, 20, 17, 0.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--rule);
}
.topbar-inner {
    max-width: var(--max-w-wide);
    margin: 0 auto;
    padding: 14px 24px;
    display: flex; align-items: center; justify-content: space-between;
    gap: 24px;
}
.brand {
    display: flex; align-items: center; gap: 12px;
    font-family: var(--font-deco);
    font-size: 19px;
    font-weight: 600;
    color: var(--text-main);
}
.brand:hover { border-bottom-color: transparent; color: var(--accent-strong); }
.brand img { width: 32px; height: 32px; }
.brand small {
    display: block;
    font-size: 11px;
    font-weight: 400;
    color: var(--text-dim);
    letter-spacing: 0.05em;
    margin-top: 2px;
}
.nav {
    display: flex; gap: 26px;
    font-size: 14.5px;
    color: var(--text-soft);
}
.nav a { color: var(--text-soft); border-bottom: none; }
.nav a:hover { color: var(--accent); }
.menu-toggle {
    display: none;
    background: none; border: none; cursor: pointer;
    padding: 6px;
}
.menu-toggle span {
    display: block; width: 22px; height: 1.5px;
    background: var(--text-main); margin: 5px 0;
    transition: 0.3s;
}

/* ============ Hero / Article 封面图（精美博物馆框）============ */
.hero-cover, .article-cover {
    max-width: 540px;
    margin: 0 auto 36px;
    aspect-ratio: 1 / 1;
    border: 1px solid var(--accent);
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 16px 50px rgba(0, 0, 0, 0.6), inset 0 0 0 3px var(--bg-base);
    position: relative;
}
.article-cover {
    max-width: 460px;
    margin: 0 auto 32px;
}
.hero-cover img, .article-cover img {
    width: 100%; height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}
.hero-cover:hover img, .article-cover:hover img {
    transform: scale(1.02);
}
/* 四角古铜金装饰 */
.hero-cover::before, .hero-cover::after,
.article-cover::before, .article-cover::after {
    content: "";
    position: absolute;
    width: 26px; height: 26px;
    border: 1.5px solid var(--accent);
    pointer-events: none;
    z-index: 2;
    opacity: 0.85;
}
.hero-cover::before, .article-cover::before {
    top: 10px; left: 10px;
    border-right: none; border-bottom: none;
}
.hero-cover::after, .article-cover::after {
    bottom: 10px; right: 10px;
    border-left: none; border-top: none;
}

/* 馆藏卡片缩略图 */
.entry-with-thumb {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 22px;
    align-items: center;
}
@media (max-width: 600px) {
    .entry-with-thumb { grid-template-columns: 1fr; gap: 14px; }
    .entry-with-thumb .thumb { max-width: 240px; }
}
.entry-with-thumb .thumb {
    aspect-ratio: 1 / 1;
    overflow: hidden;
    border: 1px solid var(--rule);
    border-radius: 3px;
    box-shadow: 0 4px 14px rgba(0,0,0,0.4);
}
.entry-with-thumb .thumb img {
    width: 100%; height: 100%; object-fit: cover; display: block;
}

/* ============ 馆藏首页 · Hero ============ */
.hero {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 80px 24px 60px;
    text-align: center;
}
.hero-seal {
    display: inline-block;
    width: 64px; height: 64px;
    border: 2px solid var(--accent);
    border-radius: 50%;
    line-height: 60px;
    font-family: var(--font-deco);
    font-size: 26px;
    color: var(--accent);
    margin-bottom: 28px;
    background: rgba(201, 168, 100, 0.04);
}
.hero h1 {
    font-family: var(--font-deco);
    font-size: 44px;
    line-height: 1.3;
    margin-bottom: 14px;
    color: var(--text-main);
    letter-spacing: 0.04em;
}
.hero-sub {
    color: var(--text-soft);
    font-size: 17px;
    max-width: 560px;
    margin: 0 auto 24px;
    line-height: 1.8;
}
.hero-meta {
    color: var(--text-dim);
    font-size: 13px;
    letter-spacing: 0.1em;
}

/* ============ 馆主自陈段 ============ */
.keeper-note {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 40px 24px;
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
}
.keeper-note p {
    margin-bottom: 1.1em;
    color: var(--text-main);
}
.keeper-note p:last-child { margin-bottom: 0; }
.keeper-sign {
    margin-top: 24px;
    text-align: right;
    color: var(--text-soft);
    font-family: var(--font-deco);
    font-style: italic;
}

/* ============ 馆藏目录 ============ */
.collection {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 60px 24px;
}
.section-title {
    font-family: var(--font-deco);
    font-size: 24px;
    margin-bottom: 32px;
    color: var(--accent);
    text-align: center;
    position: relative;
    padding-bottom: 14px;
}
.section-title::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 48px; height: 1px;
    background: var(--accent);
}
.cat-label {
    display: inline-block;
    font-family: var(--font-deco);
    font-size: 12px;
    letter-spacing: 0.15em;
    color: var(--accent);
    background: rgba(201, 168, 100, 0.08);
    border: 1px solid var(--accent);
    padding: 3px 10px;
    border-radius: 2px;
    margin-bottom: 12px;
}
.entry {
    padding: 28px 0;
    border-bottom: 1px dashed var(--rule);
    display: block;
    color: inherit;
    border-bottom-color: var(--rule);
}
.entry:hover { color: inherit; border-bottom-color: var(--rule); background: rgba(201, 168, 100, 0.02); }
.entry:last-child { border-bottom: none; }
.entry h3 {
    font-family: var(--font-deco);
    font-size: 22px;
    margin-bottom: 8px;
    color: var(--text-main);
    line-height: 1.4;
}
.entry:hover h3 { color: var(--accent-strong); }
.entry .excerpt { color: var(--text-soft); font-size: 15.5px; }
.entry .meta {
    color: var(--text-dim);
    font-size: 13px;
    margin-top: 10px;
    letter-spacing: 0.05em;
}
.entry .meta span + span::before {
    content: " · ";
    margin: 0 6px;
}

/* ============ 文章页 · 两栏布局 ============ */
.article-wrap {
    max-width: var(--max-w-wide);
    margin: 0 auto;
    padding: 60px 24px 80px;
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 60px;
    align-items: start;
}
@media (max-width: 960px) {
    .article-wrap { grid-template-columns: 1fr; gap: 32px; }
    .toc { position: static; max-height: none; }
}

/* ============ TOC ============ */
.toc {
    position: sticky;
    top: 100px;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
    font-size: 13.5px;
    padding-right: 8px;
    border-left: 1px solid var(--rule);
    padding-left: 16px;
}
.toc-title {
    font-family: var(--font-deco);
    font-size: 12px;
    letter-spacing: 0.2em;
    color: var(--accent);
    margin-bottom: 14px;
}
.toc ol { list-style: none; }
.toc li { margin-bottom: 8px; line-height: 1.55; }
.toc li.h3 { padding-left: 14px; font-size: 12.5px; }
.toc a {
    color: var(--text-soft);
    border: none;
    transition: color 0.15s;
}
.toc a:hover, .toc a.active {
    color: var(--accent-strong);
    border-bottom: none;
}
.toc a.active { font-weight: 600; }

/* ============ 文章正文 ============ */
.article {
    max-width: 680px;
}
.article-head { margin-bottom: 40px; }
.article-head .cat-label { margin-bottom: 16px; }
.article-head h1 {
    font-family: var(--font-deco);
    font-size: 36px;
    line-height: 1.35;
    color: var(--text-main);
    margin-bottom: 14px;
    letter-spacing: 0.02em;
}
.article-head .lead {
    color: var(--text-soft);
    font-size: 17px;
    line-height: 1.75;
    margin-bottom: 20px;
}
.byline {
    display: flex;
    gap: 14px;
    color: var(--text-dim);
    font-size: 13.5px;
    letter-spacing: 0.04em;
    padding-top: 18px;
    border-top: 1px solid var(--rule);
}
.byline .author {
    color: var(--text-soft);
    font-family: var(--font-deco);
}

.article h2 {
    font-family: var(--font-deco);
    font-size: 26px;
    margin: 56px 0 18px;
    color: var(--text-main);
    padding-left: 16px;
    border-left: 3px solid var(--accent);
    line-height: 1.4;
    scroll-margin-top: 80px;
}
.article h3 {
    font-family: var(--font-deco);
    font-size: 19px;
    margin: 36px 0 14px;
    color: var(--accent);
    scroll-margin-top: 80px;
}
.article p {
    margin-bottom: 1.3em;
    text-align: justify;
}
.article p:first-of-type::first-letter {
    /* 首字下沉 · 留给前几段用 */
}
.article ul, .article ol {
    margin: 0 0 1.3em 1.5em;
    line-height: 1.8;
}
.article li { margin-bottom: 0.4em; }

/* 引文 */
.article blockquote {
    margin: 28px 0;
    padding: 18px 24px;
    background: var(--bg-quote);
    border-left: 3px solid var(--warn);
    color: var(--text-soft);
    font-style: italic;
    font-size: 16px;
}
.article blockquote cite {
    display: block;
    margin-top: 10px;
    font-style: normal;
    font-size: 13px;
    color: var(--text-dim);
    letter-spacing: 0.05em;
}
.article blockquote cite::before { content: "—— "; }

/* 关键日期表 */
.timeline {
    margin: 32px 0;
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
}
.timeline-row {
    display: grid;
    grid-template-columns: 130px 1fr;
    gap: 20px;
    padding: 14px 4px;
    border-bottom: 1px dashed var(--rule-soft);
    font-size: 15px;
}
.timeline-row:last-child { border-bottom: none; }
.timeline-row .date {
    color: var(--accent);
    font-family: var(--font-deco);
    letter-spacing: 0.04em;
}
.timeline-row .event { color: var(--text-main); line-height: 1.7; }

/* 数据/事实表 */
.fact-table {
    width: 100%;
    border-collapse: collapse;
    margin: 28px 0;
    font-size: 15px;
}
.fact-table th, .fact-table td {
    padding: 12px 14px;
    text-align: left;
    border-bottom: 1px solid var(--rule);
}
.fact-table th {
    color: var(--accent);
    font-family: var(--font-deco);
    font-weight: 500;
    background: rgba(201, 168, 100, 0.04);
    letter-spacing: 0.05em;
}
.fact-table td { color: var(--text-main); }

/* 警示框 */
.warn-box {
    margin: 28px 0;
    padding: 18px 22px;
    background: rgba(139, 111, 71, 0.08);
    border: 1px solid var(--warn);
    border-radius: 2px;
}
.warn-box .label {
    display: inline-block;
    font-family: var(--font-deco);
    font-size: 13px;
    color: var(--warn);
    letter-spacing: 0.15em;
    margin-bottom: 8px;
}
.warn-box p { margin: 0; color: var(--text-main); font-size: 15px; }

/* ============ 证据截图占位（博物馆展品格调）============ */
.evidence {
    margin: 32px 0;
}
.evidence-frame {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--accent);
    border-radius: 3px;
    padding: 4px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.4), inset 0 0 0 1px rgba(201, 168, 100, 0.15);
}
.evidence-thumb {
    aspect-ratio: 16 / 10;
    background: linear-gradient(135deg, rgba(201, 168, 100, 0.04), rgba(184, 92, 56, 0.03));
    border: 1px dashed var(--rule);
    border-radius: 2px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    text-align: center;
    color: var(--text-soft);
    font-family: var(--font-deco);
    position: relative;
}
.evidence-thumb::before {
    content: "";
    position: absolute;
    top: 12px; left: 12px;
    width: 24px; height: 24px;
    border-top: 1.5px solid var(--accent);
    border-left: 1.5px solid var(--accent);
    opacity: 0.5;
}
.evidence-thumb::after {
    content: "";
    position: absolute;
    bottom: 12px; right: 12px;
    width: 24px; height: 24px;
    border-bottom: 1.5px solid var(--accent);
    border-right: 1.5px solid var(--accent);
    opacity: 0.5;
}
.evidence-label {
    font-size: 11.5px;
    color: var(--accent);
    letter-spacing: 0.2em;
    text-transform: uppercase;
}
.evidence-desc {
    font-size: 16px;
    color: var(--text-main);
    line-height: 1.7;
    padding: 0 8px;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}
.evidence-meta {
    font-size: 12px;
    color: var(--text-dim);
    letter-spacing: 0.08em;
}
.evidence figcaption {
    margin-top: 14px;
    padding: 0 8px;
    color: var(--text-soft);
    font-size: 13.5px;
    line-height: 1.7;
    font-style: italic;
    text-align: center;
}
.evidence figcaption::before { content: "▾ "; color: var(--accent); font-style: normal; }

/* ============ Ranking 快速参考卡（首页 featured snippet）============ */
.ranking-card {
    max-width: var(--max-w);
    margin: 40px auto 0;
    padding: 30px 28px;
    background: linear-gradient(135deg, rgba(34, 26, 20, 0.85), rgba(42, 31, 24, 0.85));
    border: 1px solid var(--accent);
    border-radius: 4px;
}
.ranking-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--rule);
    flex-wrap: wrap;
    gap: 8px;
}
.ranking-head h3 {
    font-family: var(--font-deco);
    font-size: 18px;
    color: var(--accent-strong);
    letter-spacing: 0.04em;
}
.ranking-head .meta {
    font-size: 12px;
    color: var(--text-dim);
    letter-spacing: 0.1em;
}
.ranking-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14.5px;
}
.ranking-table th, .ranking-table td {
    padding: 9px 10px;
    text-align: center;
    border-bottom: 1px solid var(--rule-soft);
}
.ranking-table th {
    color: var(--accent);
    font-family: var(--font-deco);
    font-size: 12.5px;
    letter-spacing: 0.08em;
    font-weight: 500;
}
.ranking-table td:first-child { text-align: left; font-family: var(--font-deco); color: var(--text-main); }
.ranking-table tr:last-child td { border-bottom: none; }
.ranking-table .score { color: var(--accent-strong); font-weight: 600; }
.ranking-foot {
    margin-top: 14px;
    font-size: 12.5px;
    color: var(--text-dim);
    line-height: 1.7;
    text-align: center;
}
.ranking-foot a { color: var(--text-soft); }

/* ============ 红旗清单可分享卡（signal card）============ */
.signal-card {
    margin: 32px 0;
    padding: 28px 24px;
    background: var(--bg-card);
    border: 1px solid var(--accent);
    border-radius: 4px;
    position: relative;
}
.signal-card::before {
    content: "🏛";
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-base);
    color: var(--accent);
    font-size: 18px;
    padding: 0 14px;
}
.signal-card .head {
    font-family: var(--font-deco);
    font-size: 17px;
    color: var(--accent-strong);
    text-align: center;
    letter-spacing: 0.08em;
    margin-bottom: 6px;
}
.signal-card .sub {
    text-align: center;
    color: var(--text-soft);
    font-size: 13.5px;
    margin-bottom: 20px;
    letter-spacing: 0.04em;
}
.signal-list {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
}
@media (max-width: 768px) { .signal-list { grid-template-columns: 1fr; } }
.signal-item {
    text-align: center;
    padding: 14px 8px;
    border: 1px solid var(--rule);
    border-radius: 3px;
    background: rgba(201, 168, 100, 0.03);
}
.signal-item .num {
    font-family: var(--font-deco);
    font-size: 22px;
    color: var(--accent);
    margin-bottom: 4px;
}
.signal-item .word {
    font-family: var(--font-deco);
    font-size: 14px;
    color: var(--text-main);
    line-height: 1.4;
}
.signal-card .share-link {
    margin-top: 20px;
    text-align: center;
    font-size: 13px;
    color: var(--text-soft);
}
.signal-card .share-link a { color: var(--accent); }

/* 链上证据 / 引用源 */
.source-list {
    margin: 32px 0 0;
    padding: 22px 24px;
    background: var(--bg-card);
    border-radius: 3px;
    border-left: 2px solid var(--text-dim);
}
.source-list .label {
    font-family: var(--font-deco);
    font-size: 13px;
    color: var(--text-soft);
    letter-spacing: 0.12em;
    margin-bottom: 12px;
}
.source-list ol {
    margin: 0 0 0 1.2em;
    font-size: 14px;
    color: var(--text-soft);
}
.source-list li { margin-bottom: 6px; line-height: 1.6; }

/* 馆主手记 · 文末段 */
.keeper-after {
    margin: 56px 0 0;
    padding: 32px 28px;
    background: var(--bg-card);
    border: 1px solid var(--rule);
    border-radius: 3px;
}
.keeper-after .head {
    font-family: var(--font-deco);
    font-size: 14px;
    color: var(--accent);
    letter-spacing: 0.15em;
    margin-bottom: 16px;
}
.keeper-after p { color: var(--text-main); margin-bottom: 1em; }
.keeper-after p:last-of-type { margin-bottom: 18px; }
.keeper-after .sign {
    text-align: right;
    color: var(--text-soft);
    font-family: var(--font-deco);
    font-style: italic;
}

/* CTA 区块 */
.cta-block {
    margin: 40px 0 0;
    padding: 28px;
    background: linear-gradient(135deg, rgba(201, 168, 100, 0.06), rgba(184, 92, 56, 0.04));
    border: 1px solid var(--accent);
    border-radius: 4px;
}
.cta-block h4 {
    font-family: var(--font-deco);
    font-size: 18px;
    color: var(--accent-strong);
    margin-bottom: 10px;
}
.cta-block p {
    color: var(--text-main);
    font-size: 15px;
    margin-bottom: 18px;
}
.cta-block p:last-of-type { margin-bottom: 18px; }
.cta-btn {
    display: inline-block;
    padding: 11px 26px;
    background: var(--accent);
    color: var(--bg-base);
    font-family: var(--font-deco);
    font-size: 15px;
    border-radius: 2px;
    border: none;
    cursor: pointer;
    letter-spacing: 0.05em;
    transition: background 0.2s, transform 0.1s;
}
.cta-btn:hover {
    background: var(--accent-strong);
    color: var(--bg-base);
    border-bottom: none;
    transform: translateY(-1px);
}
.cta-disclosure {
    margin-top: 14px;
    font-size: 12px;
    color: var(--text-dim);
    line-height: 1.6;
}

/* 相关阅读 */
.related {
    margin-top: 56px;
    padding-top: 32px;
    border-top: 1px solid var(--rule);
}
.related-title {
    font-family: var(--font-deco);
    font-size: 14px;
    color: var(--accent);
    letter-spacing: 0.15em;
    margin-bottom: 18px;
}
.related-list {
    list-style: none;
    margin: 0;
}
.related-list li { padding: 10px 0; border-bottom: 1px dashed var(--rule-soft); }
.related-list li:last-child { border-bottom: none; }
.related-list a {
    color: var(--text-main);
    font-family: var(--font-deco);
    font-size: 15.5px;
}
.related-list a:hover { color: var(--accent-strong); }
.related-list .meta {
    display: block;
    color: var(--text-dim);
    font-size: 12.5px;
    margin-top: 3px;
    letter-spacing: 0.04em;
}

/* FAQ */
.faq-list { margin-top: 18px; }
.faq-item {
    border-bottom: 1px solid var(--rule);
    padding: 16px 0;
}
.faq-q {
    cursor: pointer;
    font-family: var(--font-deco);
    font-size: 16.5px;
    color: var(--text-main);
    display: flex;
    justify-content: space-between;
    align-items: center;
    line-height: 1.5;
    gap: 12px;
}
.faq-q::after {
    content: "+";
    color: var(--accent);
    font-size: 22px;
    transition: transform 0.2s;
    flex-shrink: 0;
}
.faq-item.open .faq-q::after { content: "−"; }
.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    color: var(--text-soft);
    font-size: 15px;
}
.faq-item.open .faq-a { max-height: 800px; padding-top: 12px; }

/* ============ Footer ============ */
footer {
    margin-top: 80px;
    padding: 48px 24px 32px;
    border-top: 1px solid var(--rule);
    background: rgba(34, 26, 20, 0.5);
}
.foot-inner {
    max-width: var(--max-w-wide);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 32px;
}
@media (max-width: 768px) {
    .foot-inner { grid-template-columns: 1fr; gap: 28px; }
}
.foot-inner h5 {
    font-family: var(--font-deco);
    font-size: 14px;
    color: var(--accent);
    letter-spacing: 0.15em;
    margin-bottom: 14px;
}
.foot-inner ul { list-style: none; }
.foot-inner li { padding: 4px 0; color: var(--text-soft); font-size: 14px; }
.foot-inner a { color: var(--text-soft); }
.foot-inner a:hover { color: var(--accent); }
.foot-about p { color: var(--text-soft); font-size: 14px; margin-bottom: 10px; line-height: 1.7; }

.foot-disclaim {
    max-width: var(--max-w-wide);
    margin: 0 auto;
    padding-top: 24px;
    border-top: 1px solid var(--rule);
    color: var(--text-dim);
    font-size: 12.5px;
    line-height: 1.8;
    text-align: center;
}
.foot-disclaim strong { color: var(--text-soft); }

/* ============ Referral 高转化页专用组件 ============ */

/* Hero 强化版 */
.ref-hero {
    max-width: var(--max-w-wide);
    margin: 0 auto;
    padding: 56px 24px 32px;
}
.ref-hero-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 48px;
    align-items: center;
}
@media (max-width: 880px) {
    .ref-hero-grid { grid-template-columns: 1fr; gap: 28px; }
}
.ref-badges {
    display: flex; gap: 10px; flex-wrap: wrap;
    margin-bottom: 18px;
}
.ref-badge {
    display: inline-block;
    padding: 5px 12px;
    font-size: 12px;
    font-family: var(--font-deco);
    letter-spacing: 0.08em;
    border: 1px solid var(--accent);
    color: var(--accent);
    border-radius: 2px;
    background: rgba(201, 168, 100, 0.06);
}
.ref-badge.verified::before { content: "✓ "; }
.ref-badge.hot {
    color: var(--link);
    border-color: var(--link);
    background: rgba(184, 92, 56, 0.06);
}
.ref-hero h1 {
    font-family: var(--font-deco);
    font-size: 40px;
    line-height: 1.3;
    margin-bottom: 14px;
    color: var(--text-main);
}
.ref-hero .lead {
    color: var(--text-soft);
    font-size: 17px;
    line-height: 1.7;
    margin-bottom: 22px;
}

/* TL;DR 卡 */
.tldr {
    background: linear-gradient(135deg, rgba(201, 168, 100, 0.06), rgba(184, 92, 56, 0.04));
    border: 1px solid var(--accent);
    border-radius: 4px;
    padding: 22px 24px;
    margin-bottom: 24px;
}
.tldr-head {
    font-family: var(--font-deco);
    font-size: 13px;
    letter-spacing: 0.2em;
    color: var(--accent);
    margin-bottom: 12px;
}
.tldr ul {
    list-style: none; margin: 0; padding: 0;
}
.tldr li {
    padding: 7px 0;
    color: var(--text-main);
    font-size: 15.5px;
    line-height: 1.6;
    padding-left: 24px;
    position: relative;
}
.tldr li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--accent);
}
.tldr strong { color: var(--accent-strong); }

/* 4 KPI 数字徽章卡（替代 hero 右侧图） */
.kpi-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}
.kpi-card {
    text-align: center;
    padding: 22px 14px;
    background: var(--bg-card);
    border: 1px solid var(--rule);
    border-radius: 3px;
    position: relative;
    overflow: hidden;
}
.kpi-card::before {
    content: "";
    position: absolute; top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--accent);
}
.kpi-num {
    font-family: var(--font-deco);
    font-size: 34px;
    color: var(--accent-strong);
    line-height: 1.1;
    margin-bottom: 4px;
    font-weight: 600;
}
.kpi-card:nth-child(2) .kpi-num,
.kpi-card:nth-child(3) .kpi-num { color: var(--link); }
.kpi-label {
    font-size: 12px;
    color: var(--text-soft);
    letter-spacing: 0.06em;
    line-height: 1.4;
}

/* 强化 CTA 按钮 */
.cta-strong {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 15px 32px;
    background: linear-gradient(180deg, var(--accent-strong), var(--accent));
    color: #1A1411;
    font-family: var(--font-deco);
    font-size: 16.5px;
    font-weight: 600;
    border-radius: 3px;
    border: none;
    cursor: pointer;
    letter-spacing: 0.03em;
    box-shadow: 0 4px 18px rgba(201, 168, 100, 0.18), inset 0 1px 0 rgba(255,255,255,0.15);
    transition: transform 0.12s, box-shadow 0.18s;
    text-decoration: none;
}
.cta-strong:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 26px rgba(201, 168, 100, 0.28), inset 0 1px 0 rgba(255,255,255,0.15);
    color: #1A1411;
    border-bottom: none;
}
.cta-strong .arrow {
    font-size: 18px;
    transition: transform 0.18s;
}
.cta-strong:hover .arrow { transform: translateX(3px); }

.cta-row {
    display: flex; gap: 14px; flex-wrap: wrap;
    align-items: center;
    margin-top: 18px;
}
.cta-sub {
    font-size: 13px;
    color: var(--text-dim);
    line-height: 1.6;
}

/* 顶栏 sticky CTA */
.sticky-cta {
    position: sticky;
    top: 60px;
    z-index: 40;
    background: linear-gradient(180deg, rgba(34, 26, 20, 0.96), rgba(34, 26, 20, 0.88));
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--accent);
    padding: 12px 24px;
}
.sticky-cta-inner {
    max-width: var(--max-w-wide);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}
.sticky-cta-text {
    font-size: 14.5px;
    color: var(--text-main);
}
.sticky-cta-text strong { color: var(--accent-strong); }

/* Pros / Cons 双卡 */
.proscons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    margin: 28px 0;
}
@media (max-width: 720px) { .proscons { grid-template-columns: 1fr; } }
.pros, .cons {
    padding: 22px 24px;
    border-radius: 3px;
    border: 1px solid var(--rule);
}
.pros { background: rgba(74, 107, 61, 0.06); border-color: rgba(74, 107, 61, 0.4); }
.cons { background: rgba(184, 92, 56, 0.05); border-color: rgba(184, 92, 56, 0.35); }
.pros .head, .cons .head {
    font-family: var(--font-deco);
    font-size: 14px;
    letter-spacing: 0.15em;
    margin-bottom: 14px;
}
.pros .head { color: var(--safe); }
.pros .head::before { content: "+ "; }
.cons .head { color: var(--link); }
.cons .head::before { content: "− "; }
.pros ul, .cons ul {
    list-style: none; margin: 0; padding: 0;
}
.pros li, .cons li {
    padding: 5px 0;
    color: var(--text-main);
    font-size: 15px;
    line-height: 1.65;
    padding-left: 18px;
    position: relative;
}
.pros li::before {
    content: "✓";
    position: absolute; left: 0; color: var(--safe);
}
.cons li::before {
    content: "✕";
    position: absolute; left: 0; color: var(--link);
}

/* 注册 4 步流程 */
.steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin: 28px 0;
    counter-reset: step;
}
@media (max-width: 880px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .steps { grid-template-columns: 1fr; } }
.step {
    padding: 22px 18px;
    background: var(--bg-card);
    border: 1px solid var(--rule);
    border-radius: 3px;
    position: relative;
    counter-increment: step;
}
.step::before {
    content: counter(step);
    position: absolute;
    top: -14px; left: 16px;
    width: 28px; height: 28px;
    border-radius: 50%;
    background: var(--accent);
    color: #1A1411;
    font-family: var(--font-deco);
    font-size: 15px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
}
.step h4 {
    font-family: var(--font-deco);
    font-size: 16px;
    color: var(--accent-strong);
    margin: 6px 0 8px;
    padding-top: 8px;
}
.step p {
    font-size: 14px;
    color: var(--text-soft);
    line-height: 1.65;
}

/* 价值堆叠条 (visual cost ladder) */
.stack {
    margin: 28px 0;
    background: var(--bg-card);
    border: 1px solid var(--rule);
    border-radius: 4px;
    padding: 24px;
}
.stack-row {
    display: grid;
    grid-template-columns: 200px 1fr 90px;
    gap: 14px;
    align-items: center;
    padding: 9px 0;
    border-bottom: 1px dashed var(--rule-soft);
    font-size: 14.5px;
}
@media (max-width: 640px) {
    .stack-row { grid-template-columns: 1fr; gap: 4px; }
    .stack-row .label { font-size: 13px; }
}
.stack-row:last-child {
    border-bottom: none;
    padding-top: 16px;
    border-top: 2px solid var(--accent);
    margin-top: 6px;
    font-family: var(--font-deco);
    font-size: 17px;
    color: var(--accent-strong);
}
.stack-row .label { color: var(--text-soft); }
.stack-row .bar {
    height: 10px;
    background: var(--accent);
    border-radius: 2px;
    opacity: 0.55;
}
.stack-row .val {
    text-align: right;
    color: var(--text-main);
    font-family: var(--font-deco);
}
.stack-row:last-child .val { color: var(--accent-strong); }

/* 编辑评分（纯文字 · 避免 AggregateRating 视觉混淆） */
.rating-row {
    display: flex; align-items: baseline; gap: 12px;
    color: var(--text-soft);
    font-size: 13.5px;
    line-height: 1.6;
    margin: 12px 0 18px;
    padding: 10px 14px;
    background: rgba(201, 168, 100, 0.04);
    border-left: 2px solid var(--accent);
    border-radius: 2px;
}
.rating-num {
    font-family: var(--font-deco);
    font-size: 17px;
    color: var(--accent-strong);
    font-weight: 600;
    flex-shrink: 0;
    letter-spacing: 0.02em;
}

/* ============ 关于页 / 免责页 单栏 ============ */
.page-wrap {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 60px 24px 80px;
}
.page-wrap h1 {
    font-family: var(--font-deco);
    font-size: 32px;
    margin-bottom: 24px;
    color: var(--text-main);
}
.page-wrap h2 {
    font-family: var(--font-deco);
    font-size: 22px;
    color: var(--accent);
    margin: 40px 0 16px;
}
.page-wrap p { margin-bottom: 1.2em; }
.page-wrap ul { margin: 0 0 1.2em 1.5em; }

/* ============ 响应式 ============ */
@media (max-width: 768px) {
    body { font-size: 16px; }
    .hero h1 { font-size: 32px; }
    .article-head h1 { font-size: 26px; }
    .article h2 { font-size: 22px; }
    .article h3 { font-size: 17px; }
    .nav { display: none; position: absolute; top: 56px; right: 0; left: 0;
           background: var(--bg-card); flex-direction: column;
           padding: 16px 24px; border-bottom: 1px solid var(--rule); gap: 14px; }
    .nav.open { display: flex; }
    .menu-toggle { display: block; }
    .timeline-row { grid-template-columns: 1fr; gap: 4px; }
    .timeline-row .date { font-size: 14px; }
}

/* ============ 黑天鹅时间线 SVG ============ */
.timeline-svg-wrap {
    margin: 32px 0 44px;
    padding: 24px 20px 20px;
    background:
        radial-gradient(ellipse at 20% 30%, rgba(201, 168, 100, 0.05) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 70%, rgba(184, 92, 56, 0.04) 0%, transparent 60%),
        linear-gradient(180deg, #1F1814 0%, #1A1411 100%);
    border: 1px solid var(--rule);
    border-radius: 4px;
    box-shadow: inset 0 1px 0 rgba(201, 168, 100, 0.08), 0 2px 12px rgba(0,0,0,0.3);
    position: relative;
    overflow: hidden;
}
.timeline-svg-wrap::before {
    content: "BLACK SWANS · 16Y · 8 WRECKS";
    position: absolute;
    top: 10px; left: 20px;
    font-family: var(--font-deco);
    font-size: 12px;
    letter-spacing: 0.3em;
    color: var(--text-dim);
    text-transform: uppercase;
}
/* Per-language localized labels (overrides default English fallback above) */
:lang(zh) .timeline-svg-wrap::before,
[lang="zh-Hans"] .timeline-svg-wrap::before,
[lang="zh-CN"] .timeline-svg-wrap::before { content: "黑天鹅 16 年 · 8 件标本"; }
[lang="en"] .timeline-svg-wrap::before { content: "16 Years · 8 Wrecks"; }
[lang="ru"] .timeline-svg-wrap::before { content: "16 лет · 8 крушений"; }
[lang="ko"] .timeline-svg-wrap::before { content: "16년 · 8건의 침몰"; }
[lang="ar"] .timeline-svg-wrap::before { content: "16 سنة · 8 حطامات"; }
.timeline-svg { width: 100%; height: auto; display: block; }
.timeline-svg .tl-dot {
    fill: var(--link);
    stroke: var(--accent-strong);
    stroke-width: 1.5;
    transition: fill .25s, transform .25s, filter .25s;
    transform-origin: center;
    transform-box: fill-box;
    cursor: help;
}
.timeline-svg .tl-dot:hover {
    fill: var(--link-hover);
    filter: drop-shadow(0 0 6px rgba(184, 92, 56, 0.7));
    transform: scale(1.18);
}
.timeline-svg .tl-label {
    font-family: var(--font-deco);
    fill: var(--text-main);
    font-size: 12.5px;
}
.timeline-svg .tl-label-date {
    fill: var(--accent);
    font-size: 11px;
    letter-spacing: 0.05em;
}
.timeline-svg .tl-label-loss {
    fill: var(--text-soft);
    font-size: 10.5px;
    font-style: italic;
}
.timeline-svg .tl-axis-year {
    fill: var(--text-dim);
    font-family: var(--font-deco);
    font-size: 10.5px;
    letter-spacing: 0.05em;
}
.timeline-svg .tl-total {
    font-family: var(--font-deco);
    fill: var(--accent-strong);
    font-size: 17px;
    font-weight: 600;
    letter-spacing: 0.08em;
}
.timeline-svg .tl-total-sub {
    fill: var(--text-soft);
    font-size: 11px;
    letter-spacing: 0.2em;
}

/* 桌面横向时间线（默认）/ 移动端竖向时间线 */
.timeline-svg-mobile { display: none; }
@media (max-width: 640px) {
    .timeline-svg { display: none; }
    .timeline-svg-mobile {
        display: block;
        list-style: none;
        margin: 18px 0 4px;
        padding: 0 4px 0 22px;
        border-left: 2px solid var(--accent);
        position: relative;
    }
    .timeline-svg-mobile li {
        position: relative;
        margin-bottom: 18px;
        padding-left: 14px;
    }
    .timeline-svg-mobile li::before {
        content: "";
        position: absolute;
        left: -28px; top: 6px;
        width: 12px; height: 12px;
        border-radius: 50%;
        background: var(--link);
        border: 1.5px solid var(--accent-strong);
        box-shadow: 0 0 6px rgba(184, 92, 56, 0.4);
    }
    .timeline-svg-mobile .m-date {
        font-family: var(--font-deco);
        font-size: 12px;
        color: var(--accent);
        letter-spacing: 0.06em;
        display: block;
        margin-bottom: 2px;
    }
    .timeline-svg-mobile .m-name {
        font-family: var(--font-deco);
        font-size: 15px;
        color: var(--text-main);
        display: block;
    }
    .timeline-svg-mobile .m-loss {
        font-size: 12px;
        color: var(--text-soft);
        font-style: italic;
    }
    .timeline-svg-wrap { padding: 36px 16px 18px; }
    .timeline-svg-wrap::before { font-size: 11px; }
    .timeline-svg-total-mobile {
        margin-top: 14px;
        padding-top: 14px;
        border-top: 1px dashed var(--rule);
        text-align: right;
        font-family: var(--font-deco);
        color: var(--accent-strong);
        font-size: 15px;
        letter-spacing: 0.06em;
    }
    .timeline-svg-total-mobile small {
        display: block;
        color: var(--text-dim);
        font-size: 10.5px;
        letter-spacing: 0.2em;
        margin-top: 4px;
    }
}
.timeline-svg-total-mobile { display: none; }
@media (max-width: 640px) { .timeline-svg-total-mobile { display: block; } }

/* ============ Hero KPI 数字块 (2026-05-17 加) ============ */
.hero-kpi {
    max-width: var(--max-w-wide);
    margin: 48px auto 0;
    padding: 0 24px;
}
.hero-kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    padding: 32px 28px;
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-quote) 100%);
    border: 1px solid var(--rule);
    border-radius: 10px;
    position: relative;
}
.hero-kpi-grid::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 10px;
    background: linear-gradient(135deg, rgba(201, 168, 100, 0.05) 0%, transparent 60%);
    pointer-events: none;
}
.hero-kpi-item {
    text-align: center;
    padding: 8px 4px;
    position: relative;
}
.hero-kpi-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: -9px;
    top: 20%;
    bottom: 20%;
    width: 1px;
    background: var(--rule);
}
.hero-kpi-num {
    font-family: var(--font-deco);
    font-size: 38px;
    line-height: 1.05;
    color: var(--accent-strong);
    letter-spacing: 0.02em;
    font-weight: 600;
    margin-bottom: 6px;
}
.hero-kpi-item.hero-kpi-accent .hero-kpi-num {
    color: var(--link);
}
.hero-kpi-num sup {
    font-size: 0.5em;
    color: var(--accent);
    vertical-align: top;
    margin-left: 1px;
}
.hero-kpi-unit {
    font-size: 0.5em;
    color: var(--text-soft);
    margin-left: 4px;
    font-weight: 400;
}
.hero-kpi-label {
    font-size: 13px;
    color: var(--text-soft);
    letter-spacing: 0.05em;
    line-height: 1.4;
}
.hero-kpi-foot {
    text-align: center;
    color: var(--text-soft);
    font-size: 14.5px;
    margin-top: 22px;
    line-height: 1.7;
    font-style: italic;
    letter-spacing: 0.02em;
}
@media (max-width: 700px) {
    .hero-kpi-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px 12px;
        padding: 24px 16px;
    }
    .hero-kpi-num { font-size: 28px; }
    .hero-kpi-item:nth-child(2)::after { display: none; }
    .hero-kpi-foot { font-size: 13px; }
}

/* ============ Sticky CTA 滚动后才出现 (2026-05-17 加) ============ */
.sticky-cta {
    transform: translateY(-100%);
    transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}
.sticky-cta.show {
    transform: translateY(0);
    pointer-events: auto;
}

/* ============ Fade-in 滚动动效 (2026-05-17 加) ============ */
@media (prefers-reduced-motion: no-preference) {
    .fade-in {
        opacity: 0;
        transform: translateY(16px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .fade-in.visible {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============ 章节封面视觉锚 (2026-05-17 加) ============ */
.chapter-marker {
    margin: 64px auto 28px;
    padding: 32px 28px 28px;
    max-width: var(--max-w);
    text-align: center;
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    position: relative;
    background: linear-gradient(180deg, transparent, rgba(201, 168, 100, 0.02), transparent);
}
.chapter-marker-seal {
    display: inline-block;
    width: 56px;
    height: 56px;
    line-height: 56px;
    background: var(--link);
    color: var(--text-main);
    font-family: var(--font-deco);
    font-size: 26px;
    border-radius: 50%;
    margin-bottom: 18px;
    box-shadow: 0 2px 12px rgba(184, 92, 56, 0.3);
    letter-spacing: 0;
}
.chapter-marker-num {
    display: block;
    font-size: 12px;
    color: var(--text-dim);
    letter-spacing: 0.25em;
    margin-bottom: 8px;
    text-transform: uppercase;
}
.chapter-marker-title {
    font-family: var(--font-deco);
    font-size: 26px;
    color: var(--accent-strong);
    margin-bottom: 12px;
    font-weight: 600;
}
.chapter-marker-lead {
    color: var(--text-soft);
    font-size: 15px;
    line-height: 1.85;
    font-style: italic;
    max-width: 600px;
    margin: 0 auto;
}