/* 第3套 · zh · 长栏杂志 / Long-column magazine */
:root {
  --mz-paper: #efece4;
  --mz-sheet: #fffcf7;
  --mz-ink: #1c1a17;
  --mz-body: #3a3834;
  --mz-mute: #6d6962;
  --mz-line: #d8d2c6;
  --mz-rule: #1f4d5a;
  --mz-accent: #1f4d5a;
  --mz-accent-deep: #163942;
  --mz-accent-soft: #e4eef0;
  --mz-gold: #8a7048;
  --mz-quote: #f4efe6;
  --mz-white: #ffffff;
  --mz-col: 760px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: auto;
}

body.mz-body {
  margin: 0;
  min-height: 100vh;
  color: var(--mz-body);
  background-color: var(--mz-paper);
  background-image:
    linear-gradient(180deg, rgba(31, 77, 90, 0.04), transparent 28%),
    repeating-linear-gradient(
      90deg,
      transparent 0,
      transparent 47px,
      rgba(31, 77, 90, 0.03) 47px,
      rgba(31, 77, 90, 0.03) 48px
    );
  font-family: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.85;
}

img,
svg {
  max-width: 100%;
  display: block;
}

a {
  color: var(--mz-accent);
  text-decoration: none;
}

a:hover {
  color: var(--mz-accent-deep);
}

.mz-sheet {
  width: min(var(--mz-col), calc(100% - 1.5rem));
  margin: 1.25rem auto 2.2rem;
  background: var(--mz-sheet);
  border: 1px solid var(--mz-line);
  box-shadow: 0 18px 40px rgba(28, 26, 23, 0.06);
}

.mz-inner {
  padding: 1.35rem 2.35rem 2.1rem;
}

.mz-masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.95rem;
  border-bottom: 1px solid var(--mz-ink);
}

.mz-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--mz-ink);
  font-family: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "STSong", Georgia, "Times New Roman", serif;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.mz-brand:hover {
  color: var(--mz-accent);
}

.mz-brand svg {
  width: 32px;
  height: 32px;
  flex: 0 0 32px;
  color: var(--mz-accent);
}

.mz-issue {
  margin: 0;
  color: var(--mz-mute);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-align: right;
}

.mz-nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.35rem 1.4rem;
  margin: 0.85rem 0 0;
  padding: 0.55rem 0 0.2rem;
  border-bottom: 3px double var(--mz-line);
}

.mz-nav a {
  color: var(--mz-mute);
  font-size: 0.92rem;
  letter-spacing: 0.12em;
}

.mz-nav a:hover,
.mz-nav a.mz-current,
.mz-nav a[aria-current="page"] {
  color: var(--mz-ink);
  box-shadow: inset 0 -2px 0 var(--mz-accent);
}

.mz-hero {
  padding: 1.35rem 0 0.35rem;
}

.mz-kicker {
  margin: 0 0 0.55rem;
  color: var(--mz-accent);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
}

.mz-hero h1,
.mz-section h1 {
  margin: 0 0 0.85rem;
  color: var(--mz-ink);
  font-family: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "STSong", Georgia, "Times New Roman", serif;
  font-size: 2rem;
  line-height: 1.38;
  font-weight: 700;
}

.mz-lead {
  margin: 0 0 0.9rem;
  color: var(--mz-body);
}

.mz-lead::first-letter {
  float: left;
  margin: 0.12rem 0.35rem 0 0;
  color: var(--mz-accent);
  font-family: "Source Han Serif SC", "Noto Serif SC", "Songti SC", Georgia, serif;
  font-size: 2.7rem;
  line-height: 0.85;
  font-weight: 700;
}

.mz-p {
  margin: 0 0 0.9rem;
}

.mz-cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 0.75rem;
  margin: 1rem 0 0.45rem;
}

.mz-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.58rem 1.15rem;
  background: var(--mz-accent);
  color: var(--mz-white);
  border: 1px solid var(--mz-accent-deep);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
}

.mz-btn svg {
  width: 16px;
  height: 16px;
}

.mz-btn:hover {
  background: var(--mz-accent-deep);
  color: var(--mz-white);
}

.mz-btn-ghost {
  background: transparent;
  color: var(--mz-accent);
  border: 1px solid var(--mz-accent);
}

.mz-btn-ghost:hover {
  background: var(--mz-accent-soft);
  color: var(--mz-accent-deep);
}

.mz-note {
  margin: 0.3rem 0 0;
  color: var(--mz-mute);
  font-size: 0.86rem;
}

.mz-section {
  padding: 1.35rem 0 0.2rem;
  border-top: 1px solid var(--mz-line);
}

.mz-folio {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  margin: 0 0 0.8rem;
}

.mz-folio-no {
  color: var(--mz-gold);
  font-family: "Source Han Serif SC", "Noto Serif SC", Georgia, serif;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
}

.mz-folio h2,
.mz-section h2 {
  margin: 0;
  color: var(--mz-ink);
  font-family: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "STSong", Georgia, "Times New Roman", serif;
  font-size: 1.28rem;
  line-height: 1.4;
  font-weight: 700;
}

.mz-folio h2 {
  flex: 1;
}

.mz-mark {
  float: right;
  width: 72px;
  height: 72px;
  margin: 0 0 0.45rem 0.75rem;
  color: var(--mz-accent);
}

.mz-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
  margin: 0.7rem 0 1rem;
}

.mz-card {
  padding: 0.85rem 0.9rem;
  background: var(--mz-white);
  border: 1px solid var(--mz-line);
}

.mz-card h3,
.mz-plat h3,
.mz-col h3,
.mz-faq-item h3 {
  margin: 0 0 0.4rem;
  color: var(--mz-ink);
  font-family: "Source Han Serif SC", "Noto Serif SC", "Songti SC", Georgia, serif;
  font-size: 1.02rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.mz-card h3 svg,
.mz-plat h3 svg,
.mz-col h3 svg {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  color: var(--mz-accent);
}

.mz-card p,
.mz-plat p,
.mz-col p {
  margin: 0;
  font-size: 0.95rem;
}

.mz-platforms {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
  margin: 0.7rem 0 1rem;
}

.mz-plat {
  padding: 0.85rem 0.9rem;
  background: var(--mz-accent-soft);
  border: 1px solid #c7d7db;
}

.mz-plat .mz-btn,
.mz-plat .mz-btn-ghost {
  margin-top: 0.65rem;
}

.mz-quote {
  margin: 0 0 0.95rem;
  padding: 0.85rem 1rem 0.75rem;
  background: var(--mz-quote);
  border-left: 3px solid var(--mz-accent);
}

.mz-quote p {
  margin: 0 0 0.45rem;
}

.mz-quote footer {
  color: var(--mz-mute);
  font-size: 0.84rem;
}

.mz-table-wrap {
  overflow-x: auto;
  margin: 0.55rem 0 1rem;
}

.mz-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  background: var(--mz-white);
}

.mz-table caption {
  caption-side: top;
  text-align: left;
  padding: 0 0 0.4rem;
  color: var(--mz-gold);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
}

.mz-table th,
.mz-table td {
  border: 1px solid var(--mz-line);
  padding: 0.48rem 0.55rem;
  vertical-align: top;
  text-align: left;
}

.mz-table th {
  background: var(--mz-accent-soft);
  color: var(--mz-accent-deep);
  font-weight: 700;
}

.mz-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.7rem;
  margin: 0.7rem 0 1rem;
}

.mz-stat {
  text-align: center;
  padding: 0.75rem 0.4rem;
  border: 1px solid var(--mz-line);
  background: var(--mz-white);
}

.mz-stat-num {
  display: block;
  color: var(--mz-accent);
  font-family: "Source Han Serif SC", "Noto Serif SC", Georgia, serif;
  font-size: 1.35rem;
  font-weight: 700;
}

.mz-stat-label {
  display: block;
  margin-top: 0.2rem;
  color: var(--mz-mute);
  font-size: 0.8rem;
}

.mz-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
  margin: 0.7rem 0 1rem;
}

.mz-col {
  padding: 0.8rem 0.9rem;
  background: var(--mz-white);
  border-top: 2px solid var(--mz-accent);
}

.mz-steps {
  margin: 0.45rem 0 1rem;
  padding: 0;
  list-style: none;
  counter-reset: mzstep;
}

.mz-steps li {
  position: relative;
  margin: 0 0 0.7rem;
  padding: 0.6rem 0.75rem 0.6rem 2.7rem;
  background: var(--mz-accent-soft);
}

.mz-steps li::before {
  counter-increment: mzstep;
  content: counter(mzstep, decimal-leading-zero);
  position: absolute;
  left: 0.5rem;
  top: 0.7rem;
  color: var(--mz-accent);
  font-family: "Source Han Serif SC", "Noto Serif SC", Georgia, serif;
  font-size: 0.82rem;
  font-weight: 700;
}

.mz-faq {
  margin: 0.35rem 0 0;
}

.mz-faq-item {
  margin: 0 0 0.85rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px dashed var(--mz-line);
}

.mz-faq-item p {
  margin: 0;
}

.mz-callout {
  margin: 0.7rem 0 1rem;
  padding: 0.75rem 0.9rem;
  background: var(--mz-accent-soft);
  border: 1px solid #c7d7db;
}

.mz-callout p {
  margin: 0;
}

.mz-figure {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  margin: 0.7rem 0 1rem;
  padding: 0.7rem 0;
  color: var(--mz-accent);
}

.mz-figure svg {
  width: 54px;
  height: 54px;
}

.mz-figure span {
  color: var(--mz-mute);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
}

.mz-footer {
  margin-top: 1.5rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--mz-ink);
  color: var(--mz-mute);
  font-size: 0.82rem;
  line-height: 1.7;
  text-align: center;
}

.mz-footer p {
  margin: 0 0 0.35rem;
}

.mz-footer p:last-child {
  margin-bottom: 0;
}

.js-dl.mz-busy {
  opacity: 0.82;
}

.mz-body :focus-visible {
  outline: 2px solid var(--mz-accent);
  outline-offset: 2px;
}

.mz-byline {
  margin: 0 0 0.75rem;
  color: var(--mz-gold);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
}

.mz-rule {
  height: 0;
  margin: 0.4rem 0 0.9rem;
  border: 0;
  border-top: 1px solid var(--mz-line);
}

.mz-endmark {
  display: flex;
  justify-content: center;
  margin: 0.6rem 0 0.2rem;
  color: var(--mz-accent);
}

.mz-endmark svg {
  width: 28px;
  height: 28px;
}

@media (max-width: 760px) {
  .mz-sheet {
    width: calc(100% - 0.8rem);
    margin: 0.6rem auto 1.2rem;
  }

  .mz-inner {
    padding: 1rem 1.15rem 1.4rem;
  }

  .mz-masthead {
    flex-direction: column;
    align-items: flex-start;
  }

  .mz-issue {
    text-align: left;
  }

  .mz-hero h1,
  .mz-section h1 {
    font-size: 1.45rem;
  }

  .mz-grid-2,
  .mz-platforms,
  .mz-stats,
  .mz-cols {
    grid-template-columns: 1fr;
  }

  .mz-mark {
    float: none;
    margin: 0 auto 0.6rem;
  }

  .mz-cta-row {
    flex-direction: column;
    align-items: stretch;
  }

  .mz-btn,
  .mz-btn-ghost {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  body.mz-body {
    font-size: 16px;
  }

  .mz-brand {
    font-size: 1.15rem;
  }

  .mz-folio {
    flex-direction: column;
    gap: 0.25rem;
  }

  .mz-lead::first-letter {
    font-size: 2.2rem;
  }
}