/* ════════════════════════════════════════════════════════════
   about.css  —  关于页面专属样式
   ════════════════════════════════════════════════════════════ */

/* ─── 页面整体布局 ─── */
.about-page {
  padding-top: 62px;   /* 为固定导航栏留出空间 */
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.about-main {
  flex: 1;
  padding: 3.5rem 1.5rem 3rem;
  max-width: 860px;
  margin: 0 auto;
  width: 100%;
}

/* ─── 页面标题区 ─── */
.about-heading {
  font-family: var(--f-sci);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: .06em;
  background: linear-gradient(135deg, var(--c-cyan) 0%, var(--c-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 16px rgba(0,212,255,.4));
  line-height: 1.2;
  margin-bottom: .5rem;
  margin-top: 1rem;
}

.about-heading-en {
  font-family: var(--f-sci);
  font-size: clamp(.7rem, 1.3vw, .88rem);
  letter-spacing: .22em;
  color: var(--c-text2);
  text-transform: uppercase;
  margin-bottom: 2.5rem;
}

/* ─── 主体卡片 ─── */
.about-card {
  background: rgba(6, 12, 26, .78);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(0, 212, 255, .16);
  border-radius: 14px;
  box-shadow:
    0 8px 50px rgba(0, 0, 0, .6),
    inset 0 1px 0 rgba(0, 212, 255, .1);
  padding: 2.8rem 2.8rem 2.4rem;
}

/* ─── 引言段落 ─── */
.lead {
  font-family: var(--f-cn);
  font-size: 1.08rem;
  line-height: 2;
  color: var(--c-white);
  margin-bottom: 1.5rem;
  text-wrap: pretty;
}

/* ─── 分割线 ─── */
.about-divider {
  border: none;
  border-top: 1px solid rgba(0, 212, 255, .14);
  margin: 2rem 0;
}

/* ─── 章节标题 ─── */
.about-section-title {
  font-family: var(--f-sci);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--c-cyan);
  margin-bottom: 1rem;
  margin-top: 1.8rem;
  display: flex;
  align-items: center;
  gap: .6rem;
  filter: drop-shadow(0 0 8px rgba(0,212,255,.35));
}

.about-section-title .sn {
  color: var(--c-text2);
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: .08em;
  flex-shrink: 0;
}

/* ─── 章节块间距 ─── */
.about-section-block {
  padding-top: 1.8rem;
  padding-bottom: .6rem;
}
.about-section-block + hr.about-divider {
  margin-top: 2rem;
  margin-bottom: 0;
}

/* ─── "令人作呕" 微暖色 ─── */
.kw-disgust {
  color: rgba(220, 170, 100, .88);
  font-style: italic;
}

/* ─── 宣言引语（03章段落）── */
.kw-manifesto {
  color: var(--c-white);
  font-style: italic;
  font-weight: 500;
  line-height: 2.1;
  letter-spacing: .02em;
  text-shadow: 0 0 18px rgba(255,255,255,.12);
}

/* ─── 正文段落 ─── */
.about-card p {
  font-family: var(--f-cn);
  font-size: .94rem;
  line-height: 2;
  color: var(--c-text);
  margin-bottom: .8rem;
  text-wrap: pretty;
}

/* ─── 关键词高亮 ─── */
.kw {
  color: var(--c-cyan);
  font-weight: 600;
}

.kw-warn {
  color: #f97316;
  font-weight: 600;
}

.kw-gold {
  color: var(--c-gold);
  font-weight: 700;
  filter: drop-shadow(0 0 4px rgba(255,215,0,.4));
}

/* ─── 罪状列表 ─── */
.charge-block {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: .5rem;
}

.charge-item {
  padding: 1.4rem 0 1.4rem 1.2rem;
  border-left: 2px solid rgba(0, 212, 255, .2);
  margin-left: .2rem;
  position: relative;
}

.charge-item::before {
  content: '';
  position: absolute;
  left: -5px;
  top: 1.6rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-cyan-dim);
  box-shadow: 0 0 8px rgba(0,212,255,.5);
}

.charge-item + .charge-item {
  border-top: 1px solid rgba(0,212,255,.06);
}

.charge-label {
  font-family: var(--f-sci);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: #f97316;
  margin-bottom: .6rem !important;
  text-transform: uppercase;
}

/* ─── 引用块 ─── */
.about-quote {
  margin: 1rem 0 1rem .5rem;
  padding: .9rem 1.4rem;
  background: rgba(139, 92, 246, .08);
  border-left: 3px solid var(--c-purple);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  font-family: var(--f-cn);
  font-size: .94rem;
  font-style: italic;
  color: var(--c-white);
  line-height: 1.8;
  box-shadow: inset 0 0 30px rgba(139,92,246,.05);
}

/* ─── 价值观列表 ─── */
.value-list {
  list-style: none;
  padding: 0;
  margin: .8rem 0 .8rem .2rem;
  display: flex;
  flex-direction: column;
  gap: .55rem;
}

.value-list li {
  font-family: var(--f-cn);
  font-size: .93rem;
  line-height: 1.8;
  color: var(--c-text);
  padding-left: 1.4rem;
  position: relative;
}

.value-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--c-cyan);
  font-size: .75rem;
  top: .18rem;
  filter: drop-shadow(0 0 4px rgba(0,212,255,.6));
}

/* ─── 结语段落 ─── */
.about-closing {
  font-family: var(--f-cn);
  font-size: .9rem;
  color: var(--c-text2);
  text-align: center;
  line-height: 2;
  margin-top: .6rem;
}

/* ─── 规则按钮（关于页底部） ─── */
.about-rule-btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .55rem 1.6rem;
  font-family: var(--f-sci);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--c-purple);
  border: 1px solid var(--c-purple-dim);
  border-radius: var(--r-sm);
  background: rgba(139, 92, 246, .08);
  transition: all var(--ease-slow);
  white-space: nowrap;
  margin-top: .5rem;
}

.about-rule-btn:hover {
  color: #fff;
  background: var(--c-purple);
  border-color: var(--c-purple);
  box-shadow: var(--glow-p-md);
  transform: translateY(-1px);
}

/* ─── 响应式 ─── */
@media (max-width: 640px) {
  .about-main {
    padding: 2.5rem 1rem 2rem;
  }
  .about-card {
    padding: 1.8rem 1.4rem 1.6rem;
  }
  .about-heading {
    font-size: 1.5rem;
  }
  .charge-item {
    padding-left: .9rem;
  }
}