/**
 * fsmag.co · 关于本刊（/about）
 *
 * 设计语言：杂志卷首语 (Editor's Note) 风格。
 * 视觉特征：
 *   - 金色细线 + 中央"第一街"印章感装饰
 *   - 首段大字 + 首字下沉（drop cap）
 *   - 四支柱 grid（HISTORY / CULTURE / WORLD / READING）
 *   - 古典签名落款
 * 全部颜色/字体/间距走 fsmag-tokens，不写硬编码
 */

.fsmag-about {
  max-width: var(--fsmag-width-prose, min(720px, calc(100vw - 2 * var(--fsmag-space-read-pad, 32px))));
  margin: 0 auto;
  padding: clamp(2.5rem, 6vw, 5rem) var(--fsmag-space-read-pad, 32px) clamp(3rem, 8vw, 6rem);
  color: var(--fsmag-color-ink, #2b2b2b);
  font-family: var(--fsmag-font-prose, "Noto Serif SC", "Source Han Serif SC", serif);
}

/* ========== Hero / 封面区 ========== */
.fsmag-about-hero {
  text-align: center;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}

.fsmag-about-hero-inner {
  display: inline-block;
  max-width: 100%;
}

.fsmag-about-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  font-weight: 600;
  color: var(--fsmag-color-gold, #c5a059);
  text-transform: uppercase;
  margin: 0 0 1.25rem;
}

.fsmag-about-eyebrow-dot {
  display: inline-block;
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 50%;
  background: var(--fsmag-color-gold, #c5a059);
  flex-shrink: 0;
}

.fsmag-about-title {
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.55rem;
  line-height: 1;
}

.fsmag-about-title-cn {
  font-family: var(--fsmag-font-display, "Noto Serif SC", serif);
  font-size: clamp(2.6rem, 7vw, 4rem);
  font-weight: 700;
  color: var(--fsmag-color-deep, #1c355e);
  letter-spacing: 0.08em;
}

.fsmag-about-title-en {
  font-family: var(--fsmag-font-display-en, "Playfair Display", "Cormorant Garamond", "Times New Roman", serif);
  font-size: clamp(0.88rem, 1.4vw, 1.05rem);
  font-weight: 500;
  font-style: italic;
  color: var(--fsmag-color-ink-soft, #555);
  letter-spacing: 0.32em;
  text-transform: uppercase;
}

.fsmag-about-dek {
  margin: 1.5rem 0 0;
  font-size: clamp(1rem, 1.7vw, 1.18rem);
  color: var(--fsmag-color-ink-soft, #555);
  font-style: italic;
  font-weight: 400;
}

/* === 中央装饰：金线 + "第一街"印章 === */
.fsmag-about-rule {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin: 2.25rem auto 0;
  max-width: 22rem;
}

.fsmag-about-rule-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(
    to var(--dir, right),
    transparent 0%,
    var(--fsmag-color-gold, #c5a059) 50%,
    transparent 100%
  );
}

.fsmag-about-rule-line:first-child { --dir: right; }
.fsmag-about-rule-line:last-child  { --dir: left; }

.fsmag-about-rule-mark {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--fsmag-color-vermillion, #8b2942);
  color: var(--fsmag-color-vermillion, #8b2942);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.4em;
  text-indent: 0.4em; /* 视觉补正 letter-spacing 偏移 */
  background: var(--fsmag-color-paper, #fbfbf9);
  font-family: var(--fsmag-font-display, serif);
}

/* ========== 正文 ========== */
.fsmag-about-body {
  margin-top: clamp(1rem, 3vw, 2rem);
}

.fsmag-about-lead {
  font-size: clamp(1.18rem, 1.9vw, 1.35rem);
  line-height: 1.85;
  color: var(--fsmag-color-ink, #2b2b2b);
  font-weight: 400;
  margin: 0 0 1.5rem;
  /* 首字下沉效果 */
  &::first-letter {
    font-family: var(--fsmag-font-display, serif);
    font-size: 3.4em;
    font-weight: 700;
    line-height: 0.85;
    float: left;
    margin: 0.12em 0.18em 0 0;
    color: var(--fsmag-color-deep, #1c355e);
  }
}
/* 兼容不支持 nesting 的旧浏览器 */
.fsmag-about-lead::first-letter {
  font-family: var(--fsmag-font-display, serif);
  font-size: 3.4em;
  font-weight: 700;
  line-height: 0.85;
  float: left;
  margin: 0.12em 0.18em 0 0;
  color: var(--fsmag-color-deep, #1c355e);
}

.fsmag-about-para {
  font-size: clamp(1rem, 1.5vw, 1.08rem);
  line-height: 1.95;
  color: var(--fsmag-color-ink, #2b2b2b);
  margin: 0 0 1.4rem;
  text-align: justify;
  hyphens: auto;
}

/* ========== 装饰分隔 ◆ ========== */
.fsmag-about-divider {
  text-align: center;
  margin: clamp(2.25rem, 5vw, 3.25rem) 0;
  color: var(--fsmag-color-gold, #c5a059);
  font-size: 0.92rem;
  letter-spacing: 1em;
  text-indent: 1em;
}

.fsmag-about-divider span {
  position: relative;
  display: inline-block;
}
.fsmag-about-divider span::before,
.fsmag-about-divider span::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 4rem;
  height: 1px;
  background: var(--fsmag-color-gold, #c5a059);
  opacity: 0.45;
}
.fsmag-about-divider span::before { right: 100%; margin-right: 1rem; }
.fsmag-about-divider span::after  { left: 100%;  margin-left: 1rem; }

/* ========== 四支柱 grid ========== */
.fsmag-about-pillars {
  list-style: none;
  margin: 0 0 2.5rem;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--fsmag-color-border, #e2dcd2);
  border: 1px solid var(--fsmag-color-border, #e2dcd2);
}
@media (min-width: 720px) {
  .fsmag-about-pillars {
    grid-template-columns: repeat(4, 1fr);
  }
}

.fsmag-about-pillar {
  background: var(--fsmag-color-paper, #fbfbf9);
  padding: 1.4rem 1rem 1.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  transition: background 0.2s ease;
}

.fsmag-about-pillar:hover {
  background: var(--fsmag-color-ivory-light, #fdfcfa);
}

.fsmag-about-pillar-en {
  font-family: var(--fsmag-font-display-en, "Playfair Display", serif);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.28em;
  color: var(--fsmag-color-gold, #c5a059);
  text-transform: uppercase;
}

.fsmag-about-pillar-zh {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--fsmag-color-deep, #1c355e);
  font-family: var(--fsmag-font-display, serif);
  letter-spacing: 0.04em;
}

.fsmag-about-pillar-note {
  font-size: 0.83rem;
  color: var(--fsmag-color-ink-soft, #555);
  line-height: 1.55;
  margin-top: 0.15rem;
}

/* ========== 收尾段 ========== */
.fsmag-about-closing {
  margin: 2.5rem 0 0;
  text-align: center;
  font-family: var(--fsmag-font-display, serif);
}

.fsmag-about-closing p {
  font-size: clamp(1.1rem, 1.7vw, 1.25rem);
  line-height: 1.85;
  color: var(--fsmag-color-deep, #1c355e);
  margin: 0 0 0.5rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.fsmag-about-closing p:last-child {
  margin-bottom: 0;
  color: var(--fsmag-color-ink-soft, #555);
  font-size: clamp(0.95rem, 1.4vw, 1.05rem);
  font-style: italic;
  font-weight: 400;
}

/* ========== 签名落款 ========== */
.fsmag-about-signature {
  margin-top: clamp(3rem, 7vw, 4.5rem);
  padding-top: 2rem;
  text-align: center;
}

.fsmag-about-sign-rule {
  width: 4rem;
  height: 1.5px;
  background: var(--fsmag-color-vermillion, #8b2942);
  margin: 0 auto 1.25rem;
}

.fsmag-about-sign-name {
  font-family: var(--fsmag-font-display, serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--fsmag-color-deep, #1c355e);
  margin: 0 0 0.5rem;
  letter-spacing: 0.08em;
}

.fsmag-about-sign-meta {
  font-size: 0.85rem;
  color: var(--fsmag-color-ink-soft, #555);
  margin: 0 0 1rem;
  font-style: italic;
  letter-spacing: 0.02em;
}

.fsmag-about-sign-meta time {
  font-style: italic;
}

.fsmag-about-sign-locale {
  font-family: var(--fsmag-font-display-en, "Playfair Display", serif);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--fsmag-color-gold, #c5a059);
  letter-spacing: 0.4em;
  margin: 0;
  text-transform: uppercase;
}

/* ========== 移动端微调 ========== */
@media (max-width: 480px) {
  .fsmag-about-rule {
    gap: 0.6rem;
  }
  .fsmag-about-rule-mark {
    padding: 0.28rem 0.65rem;
    font-size: 0.72rem;
    letter-spacing: 0.32em;
  }
  .fsmag-about-pillar {
    padding: 1.1rem 0.6rem 1.2rem;
  }
  .fsmag-about-pillar-zh {
    font-size: 1.25rem;
  }
}