:root {
  --navy: #0b233f;
  --navy-2: #12395d;
  --teal: #0a706b;
  --teal-soft: #e7f4f1;
  --paper: #fffefb;
  --warm: #f5f2ec;
  --gold: #b48746;
  --ink: #17212b;
  --muted: #637080;
  --line: #dfe4e7;
  --shadow: 0 18px 50px rgba(11, 35, 63, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--warm);
  font-family: "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(11, 35, 63, .96);
  color: #fff;
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, .12);
}
.header-inner {
  width: min(1180px, calc(100% - 40px));
  min-height: 70px;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; letter-spacing: .08em; }
.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,.55);
  border-radius: 50%;
  color: #f0d3a6;
  font-family: Georgia, serif;
  font-size: 17px;
}
.main-nav { display: flex; align-items: center; gap: 24px; font-size: 14px; }
.main-nav a { color: rgba(255,255,255,.78); }
.main-nav a:first-child { color: #fff; font-weight: 700; }
.main-nav a:hover { color: #fff; }

.hero {
  background:
    radial-gradient(circle at 83% 12%, rgba(10,112,107,.21), transparent 27%),
    linear-gradient(145deg, #0b233f 0%, #12395d 100%);
  color: #fff;
  padding: 34px 0 74px;
}
.hero-inner { width: min(1040px, calc(100% - 40px)); margin: auto; }
.crumb { display: flex; flex-wrap: wrap; gap: 9px; color: rgba(255,255,255,.63); font-size: 13px; }
.crumb a:hover { color: #fff; }
.eyebrow {
  display: inline-flex;
  margin: 42px 0 14px;
  padding: 6px 11px;
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 99px;
  color: #c9e6e3;
  font-size: 13px;
  letter-spacing: .08em;
}
h1 {
  max-width: 870px;
  margin: 0;
  font-family: "Noto Serif SC", STSong, serif;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.22;
  letter-spacing: -.025em;
}
.hero-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px; margin-top: 25px; color: rgba(255,255,255,.72); font-size: 14px; }
.hero-meta .author-link { display: inline-flex; align-items: center; gap: 8px; color: #fff; font-weight: 700; }
.hero-meta .author-link::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #55c6bc; box-shadow: 0 0 0 5px rgba(85,198,188,.13); }

.article-layout {
  width: min(1120px, calc(100% - 40px));
  margin: -38px auto 70px;
  display: grid;
  grid-template-columns: minmax(0, 760px) 300px;
  gap: 34px;
  align-items: start;
}
.article-paper {
  min-width: 0;
  padding: clamp(28px, 5vw, 62px);
  border: 1px solid rgba(11,35,63,.08);
  border-radius: 20px;
  background: var(--paper);
  box-shadow: var(--shadow);
}
.article-lede {
  margin: 0 0 30px;
  padding: 19px 22px;
  border-left: 3px solid var(--teal);
  background: var(--teal-soft);
  color: #34514f;
  font-size: 16px;
  line-height: 1.8;
}
.article-body { font-family: "Noto Serif SC", STSong, serif; font-size: 18px; line-height: 1.95; }
.article-body p { margin: 0 0 1.35em; }
.article-body strong { color: var(--navy); }
.article-body h2, .article-body h3 { margin: 1.8em 0 .7em; color: var(--navy); line-height: 1.45; }
.article-body ul, .article-body ol { margin: 0 0 1.35em; padding-left: 1.6em; }
.article-body li { margin: .45em 0; }
.article-body blockquote { margin: 1.5em 0; padding: .4em 1.2em; border-left: 3px solid var(--gold); color: #505b65; }
.article-body table { display: block; width: 100%; max-width: 100%; overflow-x: auto; border-collapse: collapse; font-family: inherit; font-size: 15px; }
.article-body th, .article-body td { min-width: 7em; padding: 10px; border: 1px solid var(--line); text-align: left; }
.article-body iframe, .article-body video { max-width: 100%; }
.article-body img { display: block; width: 100%; margin: 32px auto; border-radius: 14px; box-shadow: 0 12px 32px rgba(11,35,63,.12); }
.article-note { margin: 35px 0; padding: 20px 22px; border: 1px solid #eadfce; border-radius: 12px; background: #fbf7f0; color: #5c5141; font-family: inherit; font-size: 15px; line-height: 1.75; }

.side { position: sticky; top: 96px; display: grid; gap: 16px; }
.author-card, .quick-card { overflow: hidden; border: 1px solid rgba(11,35,63,.09); border-radius: 18px; background: #fff; box-shadow: 0 12px 36px rgba(11,35,63,.07); }
.author-photo { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; object-position: center top; background: #dce5e9; }
.author-info { padding: 24px; }
.author-kicker { margin: 0 0 5px; color: var(--teal); font-size: 12px; font-weight: 700; letter-spacing: .12em; }
.author-info h2 { margin: 0; color: var(--navy); font-family: "Noto Serif SC", STSong, serif; font-size: 25px; }
.author-info > p { margin: 10px 0 18px; color: var(--muted); font-size: 14px; line-height: 1.65; }
.tags { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 19px; }
.tags span { padding: 5px 8px; border-radius: 5px; background: #eef3f5; color: #53616c; font-size: 12px; }
.button { display: flex; min-height: 44px; align-items: center; justify-content: center; border-radius: 8px; font-size: 14px; font-weight: 700; transition: .2s ease; }
.button + .button { margin-top: 9px; }
.button-primary { background: var(--teal); color: #fff; }
.button-primary:hover { background: #075b57; transform: translateY(-1px); }
.button-secondary { border: 1px solid #cfd9dc; color: var(--navy); }
.button-secondary:hover { border-color: var(--navy); }
.quick-card { padding: 20px 22px; }
.quick-card h3 { margin: 0 0 12px; color: var(--navy); font-size: 15px; }
.quick-card a { display: flex; justify-content: space-between; padding: 10px 0; border-top: 1px solid #edf0f1; color: #4e5c68; font-size: 14px; }
.quick-card a::after { content: "→"; color: var(--teal); }

.author-end {
  margin-top: 52px;
  padding: 28px;
  border-radius: 16px;
  background: var(--navy);
  color: #fff;
}
.author-end small { color: #8fd4ce; font-weight: 700; letter-spacing: .1em; }
.author-end h2 { margin: 8px 0 10px; font-family: "Noto Serif SC", STSong, serif; font-size: 25px; }
.author-end p { margin: 0 0 19px; color: rgba(255,255,255,.72); font-size: 14px; line-height: 1.7; }
.author-end-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.author-end-actions a { padding: 11px 17px; border-radius: 7px; background: #fff; color: var(--navy); font-size: 14px; font-weight: 700; }
.author-end-actions a:last-child { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.4); }

.site-footer { padding: 26px 20px 40px; text-align: center; color: #7a8289; font-size: 12px; }
.site-footer a:hover { color: var(--navy); }

@media (max-width: 900px) {
  .article-layout { grid-template-columns: minmax(0, 1fr); max-width: 760px; }
  .side { position: static; grid-row: 1; }
  .author-card { display: grid; grid-template-columns: 126px 1fr; }
  .author-photo { height: 100%; aspect-ratio: auto; object-position: center top; }
  .quick-card { display: none; }
}

@media (max-width: 640px) {
  .header-inner { width: min(100% - 28px, 1180px); min-height: 62px; }
  .brand { font-size: 15px; letter-spacing: .03em; }
  .brand-mark { width: 30px; height: 30px; }
  .main-nav a:not(:first-child) { display: none; }
  .main-nav { font-size: 13px; }
  .hero { padding: 25px 0 62px; }
  .hero-inner { width: min(100% - 30px, 1040px); }
  .eyebrow { margin-top: 32px; }
  h1 { font-size: 35px; }
  .article-layout { width: min(100% - 20px, 760px); margin-top: -28px; gap: 14px; }
  .author-card { grid-template-columns: 105px 1fr; border-radius: 14px; }
  .author-info { padding: 17px; }
  .author-info h2 { font-size: 21px; }
  .author-info > p { margin: 6px 0 12px; font-size: 12px; }
  .tags { display: none; }
  .button { min-height: 39px; font-size: 13px; }
  .article-paper { padding: 30px 22px; border-radius: 14px; }
  .article-lede { padding: 16px; font-size: 15px; }
  .article-body { font-size: 17px; line-height: 1.9; }
  .author-end { margin-top: 38px; padding: 23px 20px; }
  .author-end-actions { display: grid; }
  .author-end-actions a { text-align: center; }
}