:root {
  --ink: #1c2a22;
  --muted: #5a6b60;
  --line: #d5e0d8;
  --soft: #ffffff;
  --paper: #f4f7f2;
  --brand: #1f6b45;
  --brand-deep: #145232;
  --accent: #3d8f62;
  --pull: #e8f2eb;
  --max: 1100px;
  --radius: 4px;
  font-family: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "SimSun", serif;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, #f7faf6 0%, var(--paper) 45%, #eef3ee 100%);
  line-height: 1.8;
  min-height: 100vh;
}

a { color: var(--brand-deep); text-underline-offset: 3px; }
a:hover { color: var(--brand); }
img { max-width: 100%; height: auto; display: block; }
.wrap { width: min(100% - 2rem, var(--max)); margin-inline: auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(244, 247, 242, 0.95);
  border-bottom: 2px solid var(--brand);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.65rem 0;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  font-family: "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}
.brand img { width: 36px; height: 36px; border-radius: 8px; object-fit: cover; }
.nav-desktop { display: flex; gap: 1.05rem; flex-wrap: wrap; }
.nav-desktop a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-family: "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}
.nav-desktop a:hover { color: var(--brand); }
.menu-toggle {
  display: none;
  border: 1px solid var(--brand);
  background: #fff;
  color: var(--brand-deep);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  cursor: pointer;
}
#mobile-nav {
  display: none;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0 1rem 0.85rem;
  border-top: 1px solid var(--line);
}
#mobile-nav.open { display: flex; }
#mobile-nav a {
  color: var(--ink);
  text-decoration: none;
  padding: 0.45rem 0;
  font-family: "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

.ads-slot { margin-bottom: 0.25rem; }

/* magazine chrome */
.mag-masthead {
  text-align: center;
  padding: 1.6rem 0 1.1rem;
  border-bottom: 1px solid var(--line);
}
.mag-kicker {
  margin: 0 0 0.35rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  font-size: 0.78rem;
  color: var(--brand);
  font-family: "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}
.mag-masthead h1 {
  margin: 0.2rem 0 0.55rem;
  font-size: clamp(1.55rem, 3.2vw, 2.35rem);
  line-height: 1.35;
  font-weight: 700;
}
.mag-deck {
  margin: 0 auto;
  max-width: 46rem;
  color: var(--muted);
  font-size: 1.02rem;
}
.mag-meta {
  margin-top: 0.85rem;
  font-size: 0.85rem;
  color: var(--muted);
  font-family: "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

.mag-featured {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 1.25rem;
  padding: 1.4rem 0 1.1rem;
  border-bottom: 3px double var(--line);
}
.mag-featured figure { margin: 0; }
.mag-featured img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  border: 1px solid var(--line);
}
.mag-featured figcaption,
.mag-col figcaption,
.mag-spread figcaption {
  margin-top: 0.45rem;
  font-size: 0.88rem;
  color: var(--muted);
}
.mag-featured h2 {
  margin: 0 0 0.55rem;
  font-size: 1.35rem;
  line-height: 1.4;
}
.mag-featured p { margin: 0 0 0.7rem; color: var(--ink); }
.mag-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 0.8rem;
}
.mag-links a {
  font-family: "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 0.88rem;
  text-decoration: none;
  border: 1px solid var(--brand);
  color: var(--brand-deep);
  padding: 0.28rem 0.65rem;
  background: #fff;
}
.mag-links a:hover { background: var(--pull); }

.mag-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.35rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
}
.mag-col h2 {
  margin: 0 0 0.65rem;
  font-size: 1.12rem;
  border-top: 3px solid var(--brand);
  padding-top: 0.55rem;
}
.mag-col p { margin: 0 0 0.75rem; font-size: 0.98rem; }
.mag-col figure { margin: 0.7rem 0; }
.mag-col img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border: 1px solid var(--line);
}

.mag-pull {
  margin: 1.5rem 0;
  padding: 1.25rem 1.5rem;
  background: var(--pull);
  border-left: 5px solid var(--brand);
  font-size: 1.2rem;
  line-height: 1.55;
  color: var(--brand-deep);
}
.mag-pull cite {
  display: block;
  margin-top: 0.55rem;
  font-size: 0.85rem;
  font-style: normal;
  color: var(--muted);
  font-family: "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

.mag-article {
  padding: 0.5rem 0 2rem;
  font-size: 1.02rem;
}
.mag-article h2 {
  margin: 1.6rem 0 0.7rem;
  font-size: 1.35rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.35rem;
}
.mag-article h3 {
  margin: 1.2rem 0 0.5rem;
  font-size: 1.1rem;
  color: var(--brand-deep);
}
.mag-article p { margin: 0 0 0.9rem; }
.mag-article ul { margin: 0 0 1rem; padding-left: 1.25rem; }
.mag-article li { margin-bottom: 0.35rem; }

.mag-spread {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.1rem;
  margin: 1.2rem 0;
}
.mag-spread figure { margin: 0; }
.mag-spread img {
  width: 100%;
  aspect-ratio: 16/11;
  object-fit: cover;
  border: 1px solid var(--line);
}

.peer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
  margin: 1.2rem 0;
  padding: 0.85rem 1rem;
  background: #fff;
  border: 1px dashed var(--brand);
  font-family: "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}
.peer-links a { font-weight: 600; }

.faq details {
  border: 1px solid var(--line);
  background: #fff;
  padding: 0.75rem 1rem;
  margin-bottom: 0.55rem;
}
.faq summary {
  cursor: pointer;
  font-weight: 600;
  font-family: "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}
.faq p { margin: 0.55rem 0 0; }

.page-hero { padding: 1.5rem 0 0.5rem; }
.page-hero h1 { margin: 0 0 0.4rem; font-size: 1.7rem; }
.muted { color: var(--muted); }
.prose { padding-bottom: 2rem; }
.prose h2 { margin-top: 1.4rem; font-size: 1.2rem; color: var(--brand-deep); }

.err-box { padding: 3rem 0; text-align: center; }
.btn {
  display: inline-block;
  padding: 0.55rem 1.1rem;
  border: 1px solid var(--brand);
  text-decoration: none;
  font-family: "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-deep); color: #fff; }

.site-footer {
  border-top: 2px solid var(--brand);
  background: #e8efe9;
  padding: 1.25rem 0 1.6rem;
  font-family: "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 0.92rem;
  color: var(--muted);
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-bottom: 0.55rem;
}
.footer-nav a { color: var(--brand-deep); text-decoration: none; }

@media (max-width: 900px) {
  .mag-featured,
  .mag-columns,
  .mag-spread { grid-template-columns: 1fr; }
  .nav-desktop { display: none; }
  .menu-toggle { display: inline-block; }
}

/* SEO keyword highlight */
strong.kw, .kw{color:var(--accent,var(--brand,#c43b2c));font-weight:700}
mark.kw{background:rgba(196,59,44,.12);color:inherit;padding:0 .15em;border-radius:3px}