@import url("./compact-nav.css");

:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #19191d;
  background: #f5f5f7;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.site-nav {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 50%;
  width: max-content;
  max-width: calc(100% - 32px);
  transform: translateX(-50%);
  animation: nav-enter .7s cubic-bezier(.2, 1.3, .35, 1) backwards;
}
.site-nav-surface {
  --glow-x: 50%;
  --glow-y: 50%;
  position: relative;
  isolation: isolate;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 16px;
  border: 1px solid #e7e7ed;
  border-radius: 999px;
  background: #fffc;
  box-shadow: 0 2px 10px #19191d12;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  color: #17171a;
  transition: padding .45s cubic-bezier(.2, 1.25, .35, 1), box-shadow .28s ease, border-color .28s ease;
}
.site-nav.is-engaged:hover .site-nav-surface { padding: 20px 32px; }
.site-nav-surface::before, .site-nav-surface::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  border-radius: inherit;
  opacity: 0;
  transition: opacity .22s ease;
}
.site-nav-surface::before {
  background: radial-gradient(circle 600px at var(--glow-x) var(--glow-y), #2b7be60d, transparent 84%);
  filter: blur(38px);
}
.site-nav-surface::after {
  padding: 1px;
  background: radial-gradient(circle 500px at var(--glow-x) var(--glow-y), #2b7be699, transparent 84%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
}
.site-nav-surface:hover::before, .site-nav-surface:hover::after { opacity: 1; }
@keyframes nav-enter {
  from { opacity: 0; transform: translate(-50%, -80px) scale(.8); }
  to { opacity: 1; transform: translateX(-50%) scale(1); }
}
.site-brand { display: inline-flex; align-items: center; flex: none; }
.site-brand img { width: 48px; height: 48px; object-fit: contain; transition: opacity .2s; }
.site-brand:hover img { opacity: .8; }
.site-links { position: relative; display: flex; align-items: center; white-space: nowrap; }
.site-link-highlight { position: absolute; left: 0; top: 50%; z-index: 0; width: 0; height: 36px; transform: translateY(-50%); border: 1px solid #2b7be659; border-radius: 999px; background: #e6f0ff; opacity: 0; pointer-events: none; transition: left .35s cubic-bezier(.2, .8, .2, 1), width .35s cubic-bezier(.2, .8, .2, 1), opacity .18s; }
.site-link-highlight.is-visible { opacity: 1; }
.site-links a { position: relative; z-index: 1; padding: 8px; font-size: 16px; font-weight: 400; line-height: 24px; }
.site-links a:focus-visible, .site-login:focus-visible, .site-menu-toggle:focus-visible { outline: 2px solid #2b7be6; outline-offset: 3px; }
.site-login { flex: none; padding: 8px 16px; border-radius: 999px; background: #2b7be6; color: #fff; font-size: 16px; font-weight: 500; line-height: 24px; transition: opacity .2s; }
.site-login:hover { opacity: .9; }
.site-menu-toggle, .site-mobile-links { display: none; }

.article-hero { position: relative; padding-top: 100px; background: var(--article-accent, #5a33b2); color: white; }
.article-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 150px;
  pointer-events: none;
  opacity: .24;
  background-image: linear-gradient(#ffffff30 1px, transparent 1px), linear-gradient(90deg, #ffffff30 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(#000, transparent);
  mask-image: linear-gradient(#000, transparent);
}
.article-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 390px);
  align-items: center;
  gap: 64px;
  width: min(1200px, calc(100% - 64px));
  min-height: 420px;
  margin: 0 auto;
  padding: 42px 0 72px;
}
.article-hero-copy { min-width: 0; }
.article-eyebrow { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; }
.article-eyebrow span { padding: 6px 12px; border-radius: 999px; background: #ffffff30; font-size: 13px; font-weight: 700; }
.article-hero h1 { max-width: 760px; margin: 20px 0 16px; font-size: clamp(36px, 4vw, 54px); line-height: 1.22; letter-spacing: 0; text-wrap: balance; }
.article-lead { max-width: 640px; margin: 0; font-size: 17px; line-height: 1.8; opacity: .9; }
.article-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin-top: 34px; font-size: 14px; font-weight: 650; }
.article-meta span { padding: 7px 12px; border-radius: 999px; background: #ffffff28; }
.hero-cover { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; border-radius: 8px; background: #fff; box-shadow: 0 18px 45px #0000001c; }

.article-surface { position: relative; margin-top: -24px; border-radius: 24px 24px 0 0; background: #fff; }
.article-layout { display: grid; grid-template-columns: minmax(0, 760px) minmax(190px, 250px); justify-content: space-between; gap: 72px; width: min(1200px, calc(100% - 64px)); margin: 0 auto; padding: 64px 0 100px; }
.article-body { min-width: 0; font-size: 18px; line-height: 1.9; }
.article-body h2 { margin: 52px 0 15px; padding-left: 18px; border-left: 4px solid #2b7be6; font-size: 27px; line-height: 1.4; }
.article-body h2:first-child { margin-top: 0; }
.article-body p { margin: 0 0 22px; color: #303039; }
.article-sidebar { align-self: start; position: sticky; top: 112px; padding-left: 24px; border-left: 1px solid #e7e7eb; }
.author-line { display: flex; align-items: center; gap: 11px; margin-bottom: 32px; font-weight: 750; }
.author-line img { width: 42px; height: 42px; border-radius: 50%; }
.sidebar-label { margin: 0 0 12px; color: #7c7d88; font-size: 12px; font-weight: 750; }
.article-sidebar ol { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; color: #51515e; font-size: 14px; }
.article-sidebar a:hover, .article-return:hover, .related-link:hover { color: #2b7be6; }
.article-return { display: inline-flex; align-items: center; gap: 8px; margin-top: 46px; color: #2b7be6; font-size: 15px; font-weight: 750; }
.related-articles { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 72px; border-top: 1px solid #e8e8ed; padding-top: 28px; }
.related-link { display: grid; gap: 7px; min-width: 0; font-size: 15px; font-weight: 750; }
.related-link small { color: #888995; font-size: 12px; }

.archive-head { position: relative; padding-top: 100px; background: #fff; }
.archive-head::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 180px;
  pointer-events: none;
  opacity: .52;
  background-image:
    linear-gradient(#0512260f 1px, transparent 1px),
    linear-gradient(90deg, #0512260f 1px, transparent 1px),
    radial-gradient(circle, #2b7be628 1px, transparent 1.4px);
  background-size: 72px 72px, 72px 72px, 58px 58px;
  -webkit-mask-image: linear-gradient(#000, transparent);
  mask-image: linear-gradient(#000, transparent);
}
.archive-intro { width: min(1200px, calc(100% - 64px)); margin: 0 auto; padding: 56px 0 70px; }
.archive-intro span { color: #2b7be6; font-size: 14px; font-weight: 750; }
.archive-intro h1 { margin: 12px 0 10px; font-size: 48px; line-height: 1.2; }
.archive-intro p { margin: 0; color: #777985; font-size: 16px; }
.archive-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; width: min(1200px, calc(100% - 64px)); margin: 0 auto; padding: 48px 0 100px; }
.article-card { display: flex; flex-direction: column; overflow: hidden; min-width: 0; border-radius: 8px; background: #fff; box-shadow: 0 1px 7px #1b1a230c; transition: transform .2s, box-shadow .2s; }
.article-card:hover { transform: translateY(-4px); box-shadow: 0 10px 28px #1b1a2316; }
.article-card img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; background: #fff; }
.article-card-copy { display: flex; flex: 1; flex-direction: column; gap: 10px; padding: 23px 26px 28px; }
.article-card-category { color: #888a95; font-size: 13px; }
.article-card strong { font-size: 21px; line-height: 1.45; }
.article-card time { margin-top: auto; padding-top: 14px; color: #888a95; font-size: 14px; }
.site-footer { padding: 32px; border-top: 1px solid #e9e9ed; background: #fff; color: #858590; font-size: 13px; text-align: center; }

@media (max-width: 950px) {
  .article-hero-inner { grid-template-columns: minmax(0, 1fr) 30%; gap: 32px; }
  .article-layout { grid-template-columns: minmax(0, 1fr) 190px; gap: 30px; }
  .archive-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 767px) {
  .article-hero-inner, .article-layout, .archive-intro, .archive-list { width: calc(100% - 40px); }
  .site-nav { top: auto; left: auto; right: 16px; bottom: 16px; max-width: calc(100% - 32px); transform: none; animation-name: nav-enter-mobile; }
  .site-nav-surface { gap: 12px; padding: 12px 16px; }
  .site-nav.is-engaged:hover .site-nav-surface { padding: 12px 16px; }
  .site-nav-surface::before, .site-nav-surface::after { display: none; }
  .site-links, .site-login { display: none; }
  .site-menu-toggle { display: grid; place-items: center; flex: none; width: 36px; height: 36px; padding: 8px; border: 0; border-radius: 50%; background: transparent; color: #4b5563; cursor: pointer; }
  .site-menu-toggle:hover { background: #f3f4f6; }
  .site-menu-toggle svg { width: 20px; height: 20px; }
  .site-mobile-links:not([hidden]) { position: absolute; right: 0; bottom: calc(100% + 8px); display: grid; min-width: 150px; padding: 12px 16px; border: 1px solid #e7e7ed; border-radius: 16px; background: #fffffff2; box-shadow: 0 2px 10px #19191d12; backdrop-filter: blur(16px); animation: mobile-menu-enter .25s cubic-bezier(.2, 1.3, .35, 1) both; }
  .site-mobile-links a { padding: 8px 0; font-size: 16px; }
  .site-mobile-links a:hover, .site-mobile-links a[aria-current="page"] { background: #e8f2ff; color: #2b7be6; }
  @keyframes nav-enter-mobile { from { opacity: 0; transform: translateY(-80px) scale(.8); } to { opacity: 1; transform: none; } }
  @keyframes mobile-menu-enter { from { opacity: 0; transform: scale(.7); transform-origin: bottom right; } to { opacity: 1; transform: scale(1); transform-origin: bottom right; } }
  .archive-head, .article-hero { padding-top: 82px; }
  .article-hero-inner { display: flex; flex-direction: column; align-items: stretch; gap: 28px; min-height: 0; padding: 30px 0 60px; }
  .article-hero h1 { font-size: 36px; }
  .article-lead { font-size: 15px; }
  .article-meta { margin-top: 24px; }
  .hero-cover { max-height: 260px; }
  .article-surface { margin-top: -20px; border-radius: 20px 20px 0 0; }
  .article-layout { display: block; padding: 40px 0 76px; }
  .article-body { font-size: 16px; }
  .article-body h2 { margin-top: 40px; font-size: 23px; }
  .article-sidebar { position: static; margin-top: 56px; }
  .archive-intro { padding: 34px 0 46px; }
  .archive-intro h1 { font-size: 36px; }
  .archive-list { grid-template-columns: minmax(0, 1fr); gap: 20px; padding-top: 28px; }
}
@media (prefers-reduced-motion: reduce) {
  .site-nav, .site-mobile-links:not([hidden]) { animation: none; }
  .site-nav-surface, .site-link-highlight { transition: none; }
}