/* Qiuyang Zhang: clean white page, pale aqua stripes behind the hero,
   one big tracked-out name and a tilted photo. Everything else stays quiet. */
:root {
  --paper: #ffffff;
  --stripe: #bfefea;
  --ink: #1a1a1a;
  --muted: #56605f;
  --line: #dfe8e8;
  --accent: #1f6f86;
  --btn: #b8c6c6;
  --shadow: #ddeef0;
  --display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --text: "Hanken Grotesk", "Helvetica Neue", Arial, "PingFang SC", "Noto Sans SC", sans-serif;
  --zh: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --gutter: max(20px, 5vw);
  --max: 1120px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #121617;
    --stripe: #17302f;
    --ink: #eaf0f0;
    --muted: #9fabab;
    --line: #26302f;
    --accent: #87cefa;
    --btn: #3d4a4a;
    --shadow: #1f2a2b;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.65 var(--text);
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration-color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
[lang|="zh"], :lang(zh) { font-family: var(--zh); }

.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--paper); padding: 8px 12px; z-index: 20; }
.skip:focus { left: 8px; }

/* Top bar */
.topbar {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  max-width: var(--max); margin: 0 auto; padding: 14px var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.brand { font: 500 15px var(--display); letter-spacing: .08em; text-transform: uppercase; text-decoration: none; white-space: nowrap; }
.nav { display: flex; gap: 28px; overflow-x: auto; scrollbar-width: none; }
.nav::-webkit-scrollbar { display: none; }
.nav a { font-size: 14px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); text-decoration: none; white-space: nowrap; }
.nav a:hover { color: var(--ink); }
.nav .nav-cv { border: 1px solid var(--line); padding: 2px 10px; }

/* Hero */
.hero {
  background: repeating-linear-gradient(90deg, var(--stripe) 0 46px, var(--paper) 46px 92px);
  border-bottom: 1px solid var(--line);
}
.hero-inner {
  max-width: var(--max); margin: 0 auto; padding: clamp(48px, 9vw, 112px) var(--gutter);
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: clamp(32px, 6vw, 80px); align-items: center;
}
.hero-text { min-width: 0; }
.hello { margin: 0 0 4px; font-size: 21px; }
.name {
  margin: 0 0 22px;
  font: 800 clamp(46px, 7.2vw, 108px)/.95 var(--display);
  letter-spacing: .07em; text-transform: uppercase;
  white-space: nowrap;
  animation: rise .9s cubic-bezier(.2, .7, .2, 1) both;
}
.tags { margin: 0 0 18px; font-weight: 600; font-size: 16px; }
.tags span { color: var(--muted); font-weight: 400; margin: 0 4px; }
.intro { margin: 0 0 32px; max-width: 34em; color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; gap: 14px; }
.btn { display: inline-block; padding: 12px 26px; font-size: 16px; letter-spacing: .02em; text-decoration: none; border: 1px solid transparent; }
.btn-solid { background: var(--ink); color: var(--paper); }
.btn-solid:hover { background: var(--accent); color: var(--paper); }
.btn-line { border-color: var(--btn); background: var(--paper); }
.btn-line:hover { border-color: var(--ink); color: var(--ink); }

.hero-photo { margin: 0; justify-self: center; width: min(100%, 400px); }
.hero-photo img {
  aspect-ratio: 4 / 5; object-fit: cover; object-position: 50% 38%; width: 100%;
  transform: rotate(-4deg);
  box-shadow: 18px 18px 0 var(--shadow);
}

@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .name { animation: none; } html { scroll-behavior: auto; } }

/* Home sections */
.block { border-bottom: 1px solid var(--line); }
.block-inner {
  max-width: var(--max); margin: 0 auto; padding: clamp(48px, 7vw, 88px) var(--gutter);
  display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 16px 48px; align-items: start;
}
.block h2 { margin: 0; font: 800 15px var(--display); letter-spacing: .14em; text-transform: uppercase; padding-top: 4px; }
.about { max-width: 40em; }
.about p { margin: 0 0 1em; }
.about p:first-child { font-size: 21px; line-height: 1.55; }
.about .facts { color: var(--muted); margin: 0; }

.rows { list-style: none; margin: 0; padding: 0; display: grid; }
.rows li { display: grid; grid-template-columns: 170px minmax(0, 1fr); gap: 4px 24px; padding: 18px 0; border-top: 1px solid var(--line); }
.rows li:first-child { border-top: 0; padding-top: 0; }
.rows strong, .post-link { font-weight: 600; font-size: 18px; }
.post-link { text-decoration: none; display: inline-block; margin-bottom: 2px; }
.post-link:hover { text-decoration: underline; }
.rows .role { color: var(--muted); margin-left: 10px; }
.rows p { margin: 4px 0 0; color: var(--muted); max-width: 40em; }
.when { color: var(--muted); font-size: 15px; font-variant-numeric: tabular-nums; padding-top: 2px; }
.more { grid-column: 2; justify-self: start; font-size: 15px; letter-spacing: .04em; margin-top: 8px; }

/* Inner pages */
.sheet { max-width: 760px; margin: 0 auto; padding: clamp(40px, 7vw, 80px) var(--gutter) 72px; }
.sheet-head { margin-bottom: 40px; }
.sheet-head h1 { margin: 0; font: 800 clamp(34px, 6vw, 56px)/1.1 var(--display); letter-spacing: .03em; text-wrap: balance; }
.post .sheet-head h1 { font-family: var(--zh); font-weight: 600; letter-spacing: 0; font-size: clamp(30px, 5vw, 44px); }
.sheet-head p { margin: 12px 0 0; color: var(--muted); }
.meta { display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: 15px; margin: 0 0 12px !important; }

.entries { list-style: none; padding: 0; margin: 0; display: grid; gap: 44px; }
.entry h2 { margin: 2px 0 8px; font-size: 22px; line-height: 1.3; font-weight: 600; }
.entry .when { margin: 0; }
.entry .note { margin: 0 0 8px; color: var(--muted); }
.entry ul, .prose-list { margin: 0; padding-left: 1.2em; display: grid; gap: 8px; }

.prose { font-size: 18px; line-height: 1.9; }
.prose:lang(zh) { line-height: 2; }
.prose h2, .prose h3 { line-height: 1.35; margin: 2em 0 .6em; }
.prose p { margin: 0 0 1.2em; }
.prose blockquote { margin: 1.5em 0; padding-left: 20px; border-left: 3px solid var(--stripe); color: var(--muted); }
.prose pre { overflow-x: auto; background: var(--stripe); padding: 16px; }
.prose a { overflow-wrap: anywhere; }

.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--line); }
.pager a { text-decoration: none; font-weight: 600; }
.pager small { display: block; color: var(--muted); font-weight: 400; font-family: var(--text); }
.pager-next { text-align: right; grid-column: 2; }
.comments { margin-top: 56px; }

/* Footer */
.footer-inner {
  max-width: var(--max); margin: 0 auto; padding: 32px var(--gutter);
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px;
  color: var(--muted); font-size: 14px;
}
.footer p { margin: 0; }
.icons { list-style: none; padding: 0; margin: 0; display: flex; gap: 18px; font-size: 20px; }
.icons a { color: var(--muted); }
.icons a:hover { color: var(--accent); }

/* Small screens */
@media (max-width: 820px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-photo { width: min(72%, 300px); margin-top: 8px; }
  .block-inner { grid-template-columns: 1fr; }
  .more { grid-column: 1; }
}
@media (max-width: 560px) {
  .nav { gap: 18px; }
  .topbar-inner { gap: 20px; }
  .home .brand { display: none; }
  .home .topbar-inner { justify-content: flex-start; }
  .rows li { grid-template-columns: 1fr; }
  .rows .role { display: block; margin-left: 0; }
}