@charset "UTF-8";
/* ==========================================================================
   WhatsApp 网页版 · 说法核查（Fact Check）
   设计方向：瑞士国际主义 / 编辑网格
   冷白纸面 + 纯黑字 + 单一红 + 12 列网格 + 巨型数字水印 + 左侧列标尺
   无圆角、无阴影、无渐变。所有尺寸走变量。
   ========================================================================== */

:root {
  --paper: #fafaf8;
  --paper-2: #f2f1ec;
  --ink: #0b0b0b;
  --ink-2: #3d3d3a;
  --muted: #74746c;
  --line: #dad9d2;
  --line-ink: #0b0b0b;
  --red: #e02020;
  --red-soft: #fbeceb;
  --wm: #ecebe4;

  --sans: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  --fs-xxs: 0.6875rem;
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.0625rem;
  --fs-lg: 1.25rem;
  --fs-h3: clamp(1.05rem, 1.5vw, 1.22rem);
  --fs-h2: clamp(1.5rem, 3vw, 2.15rem);
  --fs-hero: clamp(2.3rem, 5.9vw, 4.35rem);

  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.5rem;
  --sp-6: 2.25rem;
  --sp-7: 3.5rem;
  --sp-8: 5rem;

  --wrap: 1140px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--fs-base);
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "kern" 1;
}

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

a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--line); }
a:hover { border-bottom-color: var(--red); color: var(--red); }

strong { font-weight: 700; }
em { font-style: normal; color: var(--red); }

code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--paper-2);
  border: 1px solid var(--line);
  padding: 0.05em 0.32em;
}

ul, ol { margin: 0; padding: 0; list-style: none; }
p { margin: 0; }
h1, h2, h3, h4 { margin: 0; font-weight: 800; line-height: 1.15; letter-spacing: -0.01em; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: clamp(1.1rem, 4vw, 2.5rem);
}

/* ---------- 左侧 12 列标尺 ---------- */
.ruler {
  display: none;
  position: fixed;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 20;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  color: var(--muted);
  pointer-events: none;
}
.ruler span {
  display: flex;
  align-items: center;
  gap: 5px;
  height: 22px;
}
.ruler span::before {
  content: "";
  width: 7px;
  height: 1px;
  background: var(--line);
}
.ruler span:nth-child(3n + 1)::before { width: 13px; background: var(--muted); }
.ruler span.on { color: var(--red); }
.ruler span.on::before { background: var(--red); width: 13px; }

@media (min-width: 1280px) { .ruler { display: block; } }

/* ---------- 顶栏 ---------- */
.top { border-bottom: 1px solid var(--line-ink); background: var(--paper); }
.top-in {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  min-height: 62px;
}
.mark {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  border-bottom: 0;
  margin-right: auto;
  font-weight: 900;
  font-size: 0.95rem;
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.mark span { color: var(--red); font-weight: 700; }
.mark small {
  font-family: var(--mono);
  font-size: 0.6rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
}
.top-nav { display: none; gap: 1.15rem; }
.top-nav a {
  font-size: var(--fs-sm);
  border-bottom: 0;
  color: var(--ink-2);
  padding-block: 0.2rem;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}
.top-nav a:hover { color: var(--ink); border-bottom-color: var(--line); }
.top-nav a[aria-current="page"] { color: var(--ink); font-weight: 700; border-bottom-color: var(--red); }

.top-more {
  display: inline-flex;
  align-items: center;
  padding: 0.42rem 0.8rem;
  border: 1px solid var(--line-ink);
  border-bottom-width: 1px;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.top-more:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }

@media (min-width: 900px) { .top-nav { display: flex; } }
@media (max-width: 899px) {
  .top-more { display: none; }
  .top-in { flex-wrap: wrap; padding-block: 0.6rem; gap: 0.5rem 1rem; }
  .top-nav { display: flex; flex-wrap: wrap; order: 3; width: 100%; gap: 0.9rem; }
  .top-nav a { font-size: var(--fs-xs); }
}

/* ---------- 首屏 ---------- */
.hero { padding-block: clamp(2.2rem, 5.5vw, 4.2rem) clamp(1.6rem, 3vw, 2.4rem); }
.hero-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(1rem, 2vw, 1.6rem);
  align-items: end;
}
.hero-main { grid-column: 1 / span 8; }
.hero-side { grid-column: 9 / span 4; }

.kicker {
  display: block;
  font-family: var(--mono);
  font-size: var(--fs-xxs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
}
.display {
  font-size: var(--fs-hero);
  font-weight: 900;
  line-height: 0.99;
  letter-spacing: -0.035em;
  text-wrap: balance;
}
.display em { color: var(--red); }
.lede {
  margin-top: 1.3rem;
  max-width: 34em;
  font-size: var(--fs-md);
  color: var(--ink-2);
  line-height: 1.8;
}

.hero-side { border-left: 1px solid var(--line); padding-left: clamp(0.8rem, 1.6vw, 1.2rem); }
.side-label {
  display: block;
  font-family: var(--mono);
  font-size: var(--fs-xxs);
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 0.8rem;
}
.tally { display: flex; align-items: baseline; gap: 0.5rem; }
.tally b {
  font-size: clamp(2.6rem, 5vw, 3.6rem);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.05em;
}
.tally span { font-size: var(--fs-sm); color: var(--muted); }
.side-list { margin-top: 1.1rem; border-top: 1px solid var(--line); }
.side-list li {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 0.42rem 0;
  border-bottom: 1px solid var(--line);
  font-size: var(--fs-sm);
  color: var(--ink-2);
}
.side-list b { font-family: var(--mono); font-size: var(--fs-xs); color: var(--red); font-weight: 600; }

/* ---------- 章节 ---------- */
.sec { padding-block: clamp(2.2rem, 4.5vw, 3.6rem); }
.sec-rule { border-top: 1px solid var(--line-ink); }
.sec-head {
  position: relative;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: clamp(1.4rem, 2.5vw, 2.2rem);
}
.sec-title {
  grid-column: 1 / span 9;
  font-size: var(--fs-h2);
  letter-spacing: -0.025em;
  line-height: 1.12;
  position: relative;
  z-index: 1;
}
.sec-note {
  grid-column: 10 / span 3;
  font-size: var(--fs-sm);
  color: var(--muted);
  align-self: end;
  border-top: 1px solid var(--line);
  padding-top: 0.6rem;
}

/* ---------- 误解条目 ---------- */
.items { display: grid; gap: 0; border-top: 1px solid var(--line); }
.item {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(0.6rem, 1.6vw, 1.4rem);
  padding-block: clamp(1.3rem, 2.4vw, 1.9rem);
  border-bottom: 1px solid var(--line);
}
.item-no {
  grid-column: 1 / span 1;
  font-family: var(--mono);
  font-size: var(--fs-xs);
  color: var(--red);
  letter-spacing: 0.06em;
  padding-top: 0.25rem;
}
.item-body { grid-column: 2 / span 11; }
.claim {
  font-size: var(--fs-h3);
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.claim::before {
  content: "说法";
  display: inline-block;
  margin-right: 0.55rem;
  padding: 0.05rem 0.35rem;
  background: var(--red);
  color: var(--paper);
  font-size: var(--fs-xxs);
  font-weight: 700;
  letter-spacing: 0.1em;
  vertical-align: 0.22em;
}
.verdict {
  margin-top: 0.55rem;
  font-size: var(--fs-base);
  color: var(--ink-2);
  max-width: 46em;
}
.verdict strong { color: var(--ink); }
.verdict .no { color: var(--red); font-weight: 800; }
.verify {
  margin-top: 0.6rem;
  font-size: var(--fs-sm);
  color: var(--muted);
  max-width: 46em;
  padding-left: 0.9rem;
  border-left: 2px solid var(--muted);
}
.verify b {
  font-family: var(--mono);
  font-size: var(--fs-xxs);
  letter-spacing: 0.14em;
  color: var(--ink-2);
  display: block;
  margin-bottom: 0.15rem;
}

/* ---------- 速览表 ---------- */
.tbl-wrap { overflow-x: auto; max-width: 100%; border-top: 1px solid var(--line-ink); }
.tbl { width: 100%; min-width: 32rem; border-collapse: collapse; text-align: left; font-size: var(--fs-sm); }
.tbl th {
  padding: 0.6rem 0.8rem 0.6rem 0;
  border-bottom: 1px solid var(--line-ink);
  font-family: var(--mono);
  font-size: var(--fs-xxs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}
.tbl td {
  padding: 0.65rem 0.8rem 0.65rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-2);
  vertical-align: top;
}
.tbl td:first-child { width: 2.6rem; font-family: var(--mono); font-size: var(--fs-xs); color: var(--muted); }
.tbl td strong { color: var(--ink); }
.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: var(--fs-xxs);
  letter-spacing: 0.08em;
  padding: 0.06rem 0.4rem;
  border: 1px solid currentColor;
  white-space: nowrap;
}
.tag-no { color: var(--red); }
.tag-yes { color: #1a6b3a; }

/* ---------- 说明块 ---------- */
.note {
  margin-block: clamp(1.4rem, 2.5vw, 2rem);
  padding: 1rem 1.1rem;
  background: var(--paper-2);
  border-left: 3px solid var(--red);
}
.note b {
  display: block;
  font-family: var(--mono);
  font-size: var(--fs-xxs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 0.35rem;
}
.note p { font-size: var(--fs-sm); color: var(--ink-2); }
.note p + p { margin-top: 0.55rem; }

/* ---------- 步骤 ---------- */
.steps { border-top: 1px solid var(--line); }
.step {
  display: grid;
  grid-template-columns: 3.4rem minmax(0, 1fr);
  gap: clamp(0.6rem, 2vw, 1.4rem);
  padding-block: clamp(1rem, 2vw, 1.5rem);
  border-bottom: 1px solid var(--line);
}
.step-no { font-family: var(--mono); font-size: var(--fs-xs); color: var(--red); padding-top: 0.25rem; }
.step h3 { font-size: var(--fs-h3); margin-bottom: 0.35rem; }
.step p { font-size: var(--fs-sm); color: var(--ink-2); max-width: 46em; }
.step p + p { margin-top: 0.5rem; }

/* ---------- 数据流向 ---------- */
.flow { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.flow > div { background: var(--paper); padding: clamp(0.8rem, 1.8vw, 1.1rem); }
.flow b {
  display: block;
  font-family: var(--mono);
  font-size: var(--fs-xxs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.35rem;
}
.flow p { font-size: var(--fs-sm); color: var(--ink-2); line-height: 1.6; }
.flow-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.flow .is-local { box-shadow: inset 0 3px 0 var(--red); }
.flow .is-local b { color: var(--red); }

/* ---------- 分组索引 ---------- */
.groups { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line-ink); }
.group { padding-block: clamp(0.9rem, 1.8vw, 1.3rem); border-bottom: 1px solid var(--line); }
.group:nth-child(odd) { padding-right: clamp(1rem, 2.5vw, 1.8rem); border-right: 1px solid var(--line); }
.group:nth-child(even) { padding-left: clamp(1rem, 2.5vw, 1.8rem); }
.group h3 {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.8rem;
  font-size: var(--fs-h3);
  letter-spacing: -0.01em;
}
.group h3 a { border-bottom: 0; }
.group h3 a:hover { color: var(--red); }
.group h3 em {
  font-family: var(--mono);
  font-size: var(--fs-xxs);
  font-style: normal;
  letter-spacing: 0.1em;
  color: var(--muted);
  font-weight: 400;
  flex: none;
}
.group ul { margin-top: 0.55rem; }
.group li {
  font-size: var(--fs-sm);
  color: var(--ink-2);
  padding: 0.3rem 0;
  border-bottom: 1px dotted var(--line);
  line-height: 1.55;
}
.group li:last-child { border-bottom: 0; }
.group li a { border-bottom: 0; color: var(--ink-2); }
.group li a:hover { color: var(--red); }

/* ---------- 相关 ---------- */
.related { margin-top: clamp(1.8rem, 3vw, 2.6rem); border-top: 1px solid var(--line-ink); }
.related h2 {
  font-family: var(--mono);
  font-size: var(--fs-xxs);
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
  padding-block: 0.7rem;
  font-weight: 600;
}
.related ul { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line); }
.related li { border-bottom: 1px solid var(--line); }
.related a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.8rem;
  padding: 0.8rem 1rem 0.8rem 0;
  border-bottom: 0;
  font-size: var(--fs-sm);
}
.related a i {
  font-family: var(--mono);
  font-style: normal;
  font-size: var(--fs-xxs);
  color: var(--muted);
  flex: none;
}

/* ---------- 页头 ---------- */
.page-head { padding-block: 1.2rem 0; }
.crumb { font-size: var(--fs-xs); color: var(--muted); padding-block: 0.9rem; }
.crumb ol { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.crumb li + li::before { content: "/"; margin-right: 0.4rem; color: var(--line); }
.crumb a { color: var(--muted); border-bottom: 0; }
.crumb a:hover { color: var(--red); }
.crumb [aria-current] { color: var(--ink-2); }

.page-head h1 {
  font-size: clamp(1.9rem, 4.2vw, 3rem);
  letter-spacing: -0.03em;
  line-height: 1.06;
  text-wrap: balance;
}
.page-head .lead { margin-top: 1rem; max-width: 40em; color: var(--ink-2); }
.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.6rem;
  margin-top: 1.4rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--line-ink);
  font-family: var(--mono);
  font-size: var(--fs-xxs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- 页脚 ---------- */
.foot { border-top: 1px solid var(--line-ink); margin-top: clamp(2rem, 4vw, 3.4rem); }
.foot-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: clamp(1.4rem, 3vw, 2.6rem);
  padding-block: clamp(1.8rem, 3.5vw, 2.8rem);
}
.foot h2 {
  font-family: var(--mono);
  font-size: var(--fs-xxs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.8rem;
  font-weight: 600;
}
.foot p { font-size: var(--fs-sm); color: var(--ink-2); max-width: 24em; }
.foot li + li { margin-top: 0.4rem; }
.foot li a { font-size: var(--fs-sm); color: var(--ink-2); border-bottom: 0; }
.foot li a:hover { color: var(--red); }
.foot-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  padding-block: 0.9rem;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: var(--fs-xxs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- 404 ---------- */
.err { min-height: 56vh; display: grid; grid-template-columns: minmax(0, 1fr); place-items: center; text-align: center; padding-block: 2.5rem; }
.err-code {
  font-size: clamp(4rem, 16vw, 9rem);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.06em;
  color: var(--ink);
}
.err-code em { color: var(--red); }
.err h1 { font-size: var(--fs-h2); margin-top: 1.2rem; }
.err .lead { margin-top: 0.7rem; color: var(--ink-2); max-width: 32em; }
.err .acts { display: flex; flex-wrap: wrap; gap: 0.6rem; justify-content: center; margin-top: 1.6rem; }
.btn {
  display: inline-flex;
  align-items: center;
  padding: 0.6rem 1.1rem;
  border: 1px solid var(--line-ink);
  font-size: var(--fs-sm);
  font-weight: 700;
}
.btn:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn-solid { background: var(--ink); color: var(--paper); }
.btn-solid:hover { background: var(--red); border-color: var(--red); }

/* ---------- 工具 ---------- */
.mono { font-family: var(--mono); }
.dim { color: var(--muted); }
.mt-5 { margin-top: 1.5rem; }
.mt-6 { margin-top: 2.25rem; }

/* ---------- 响应式 ---------- */
@media (max-width: 899px) {
  .hero-main { grid-column: 1 / -1; }
  .hero-side { grid-column: 1 / -1; border-left: 0; padding-left: 0; border-top: 1px solid var(--line); padding-top: 1.1rem; }
  .sec-title { grid-column: 1 / -1; }
  .sec-note { grid-column: 1 / -1; }
  .item-no { grid-column: 1 / span 1; }
  .item-body { grid-column: 2 / -1; }
  .foot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .related ul { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .flow, .flow-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 600px) {
  .flow, .flow-4 { grid-template-columns: minmax(0, 1fr); }
  .item { grid-template-columns: minmax(0, 1fr); gap: 0.3rem; }
  .item-no { grid-column: 1 / -1; padding-top: 0; }
  .item-body { grid-column: 1 / -1; }
  .step { grid-template-columns: minmax(0, 1fr); gap: 0.3rem; }
  .foot-grid { grid-template-columns: minmax(0, 1fr); }
  .related ul { grid-template-columns: minmax(0, 1fr); }
  .claim::before { display: none; }
  .groups { grid-template-columns: minmax(0, 1fr); }
  .group:nth-child(odd) { padding-right: 0; border-right: 0; }
  .group:nth-child(even) { padding-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}