:root{
  --bg:#f7f5ef; --surface:#ffffff; --surface-2:#fbfaf6;
  --text:#1b1c1e; --muted:#62666d; --faint:#8a8f97;
  --border:#e7e2d6; --border-strong:#d9d3c4;
  --accent:#1f5fa6; --accent-soft:#e9f1fb;
  --pick:#a8560f; --pick-soft:#fbefe2;
  --shadow:0 1px 2px rgba(28,27,24,.05), 0 8px 24px rgba(28,27,24,.06);
  --radius:12px; --maxw:1080px;
  --serif:"Newsreader","Source Serif 4",Georgia,"Songti SC","Noto Serif CJK SC",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
}
:root[data-theme="dark"]{
  --bg:#14161b; --surface:#1b1e25; --surface-2:#20242c;
  --text:#e8e9ec; --muted:#a3aab6; --faint:#7c828d;
  --border:#2a2f38; --border-strong:#363c46;
  --accent:#6ea8fe; --accent-soft:#1c2840;
  --pick:#e0935a; --pick-soft:#33261a;
  --shadow:0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.35);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#14161b; --surface:#1b1e25; --surface-2:#20242c;
    --text:#e8e9ec; --muted:#a3aab6; --faint:#7c828d;
    --border:#2a2f38; --border-strong:#363c46;
    --accent:#6ea8fe; --accent-soft:#1c2840;
    --pick:#e0935a; --pick-soft:#33261a;
    --shadow:0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.35);
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);
  line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:var(--maxw);margin:0 auto;padding:0 22px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 86%,transparent);
  backdrop-filter:saturate(160%) blur(10px);border-bottom:1px solid var(--border)}
.head-inner{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{display:flex;align-items:center;gap:11px;color:var(--text)}
.brand:hover{text-decoration:none}
.logo{font-size:24px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:18px;letter-spacing:.2px}
.brand-text small{color:var(--muted);font-size:11.5px}
.nav{display:flex;align-items:center;gap:18px}
.nav a{color:var(--muted);font-size:14.5px;font-weight:500}
.nav a:hover{color:var(--text);text-decoration:none}
.nav a.on{color:var(--text)}
#theme-toggle{background:none;border:1px solid var(--border-strong);color:var(--muted);
  width:34px;height:34px;border-radius:9px;cursor:pointer;font-size:15px;line-height:1}
#theme-toggle:hover{color:var(--text);border-color:var(--accent)}

/* hero */
.hero{padding:46px 0 26px;border-bottom:1px solid var(--border)}
.issue-date{color:var(--accent);font-weight:600;font-size:14px;letter-spacing:.4px;text-transform:uppercase}
.hero-title{font-family:var(--serif);font-weight:600;font-size:clamp(28px,4.4vw,42px);
  margin:.28em 0 .25em;letter-spacing:-.01em}
.hero-summary{color:var(--muted);font-size:16.5px;max-width:760px;margin:0 0 16px}
.chips,.tags{display:flex;flex-wrap:wrap;gap:8px}
.chip{background:var(--surface);border:1px solid var(--border);border-radius:999px;
  padding:4px 12px;font-size:13px;color:var(--muted)}
.chip.total{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}
.draft-flag{background:var(--pick-soft);color:var(--pick);border:1px solid var(--pick);
  border-radius:6px;font-size:11px;padding:2px 7px;margin-left:8px;vertical-align:middle;text-transform:none}

/* sections */
.section{padding:34px 0;border-bottom:1px solid var(--border)}
.section:last-child{border-bottom:none}
.section-title{font-family:var(--serif);font-size:25px;font-weight:600;margin:0 0 22px;display:flex;align-items:baseline;gap:12px}
.st-en{order:2;font-family:var(--sans);font-size:12.5px;font-weight:600;letter-spacing:.12em;
  text-transform:uppercase;color:var(--faint)}

/* cards */
.picks-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:18px}
.pick{position:relative;display:flex;gap:14px;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:20px;transition:.18s box-shadow,.18s border-color,.18s transform}
.pick:hover{box-shadow:var(--shadow);border-color:var(--border-strong);transform:translateY(-2px)}
.rank{flex:none;width:30px;height:30px;border-radius:8px;background:var(--pick-soft);color:var(--pick);
  font-weight:700;font-family:var(--serif);display:grid;place-items:center;font-size:16px}
.pick-body{min-width:0}
.card-head{display:flex;align-items:center;gap:10px;margin-bottom:7px;flex-wrap:wrap}
.title{font-family:var(--serif);font-size:18px;line-height:1.34;margin:0 0 7px;font-weight:600}
.title a{color:var(--text)}
.title a:hover{color:var(--accent)}
.authors{color:var(--faint);font-size:13px;margin:0 0 9px}
.tldr{margin:0 0 9px;font-size:14.5px;color:var(--text)}
.reason{margin:0 0 9px;font-size:13.5px;color:var(--muted);background:var(--pick-soft);
  border-left:3px solid var(--pick);padding:7px 11px;border-radius:0 7px 7px 0}
.reason-label{color:var(--pick);font-weight:700;margin-right:7px;font-size:12px}
.meta{color:var(--faint);font-size:12.5px}
.cites{color:var(--pick)}

/* badges */
.badge{font-size:11.5px;font-weight:700;color:#fff;border-radius:6px;padding:2px 8px;letter-spacing:.2px;white-space:nowrap}
.j-scirob{background:#b3261e}.j-tro{background:#00629b}.j-ijrr{background:#6b3fa0}
.j-ral{background:#0f766e}.j-auro{background:#2e7d32}.j-jfr{background:#c2580c}.j-default{background:#555}

/* tags */
.tag{font-size:11.5px;color:var(--muted);background:var(--surface-2);border:1px solid var(--border);
  border-radius:6px;padding:2px 8px}

/* abstract */
.abs{margin-top:10px}
.abs summary{cursor:pointer;color:var(--accent);font-size:13px;font-weight:500;list-style:none}
.abs summary::-webkit-details-marker{display:none}
.abs summary::before{content:"▸ ";color:var(--faint)}
.abs[open] summary::before{content:"▾ "}
.abs p{margin:8px 0 0;font-size:13.5px;color:var(--muted);line-height:1.7}

/* directions */
.dir-block{margin-bottom:30px}
.dir-head{font-family:var(--serif);font-size:20px;font-weight:600;display:flex;align-items:center;gap:10px;
  margin:0 0 14px;padding-bottom:9px;border-bottom:1px dashed var(--border-strong)}
.dir-icon{font-size:20px}
.dir-en{font-family:var(--sans);font-size:12px;color:var(--faint);font-weight:600;letter-spacing:.06em;text-transform:uppercase}
.dir-count{margin-left:auto;font-family:var(--sans);font-size:12.5px;color:var(--faint);font-weight:500}
.dir-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}

/* filters */
.filters{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:20px;
  position:sticky;top:62px;z-index:20;background:var(--bg);padding:12px 0}
#search{flex:1;min-width:220px;background:var(--surface);border:1px solid var(--border-strong);
  color:var(--text);border-radius:9px;padding:9px 13px;font-size:14px;font-family:inherit}
#search:focus{outline:none;border-color:var(--accent)}
.fgroup{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.fgroup.sortg label{color:var(--faint);font-size:13px}
.fchip{background:var(--surface);border:1px solid var(--border);color:var(--muted);
  border-radius:999px;padding:5px 12px;font-size:12.5px;cursor:pointer;font-family:inherit}
.fchip:hover{border-color:var(--accent);color:var(--text)}
.fchip.active{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}
#sort{background:var(--surface);border:1px solid var(--border-strong);color:var(--text);
  border-radius:8px;padding:6px 9px;font-size:13px;font-family:inherit}
.count{margin-left:auto;color:var(--faint);font-size:13px}

/* full list rows */
.rows{display:flex;flex-direction:column;gap:0}
.row{padding:18px 4px;border-bottom:1px solid var(--border)}
.row .title{font-size:16px}
.row .card-head{margin-bottom:5px}
.empty{text-align:center;color:var(--faint);padding:40px}

/* archive */
.arch-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.arch-item{display:block;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:20px;color:var(--text);transition:.18s}
.arch-item:hover{text-decoration:none;border-color:var(--accent);box-shadow:var(--shadow);transform:translateY(-2px)}
.arch-date{font-family:var(--serif);font-size:22px;font-weight:600;color:var(--accent)}
.arch-meta{color:var(--faint);font-size:13px;margin:4px 0 10px}
.arch-sum{color:var(--muted);font-size:14px;margin:0}

/* prose / about */
.prose{max-width:760px}
.prose p{color:var(--muted)}
.prose .section-title{margin-top:30px}
.prose ul.plain{list-style:none;padding:0}
.prose ul.plain li{padding:6px 0;border-bottom:1px solid var(--border);color:var(--muted)}
.prose ul.cols{columns:2;column-gap:30px}
.prose ul.cols li{border:none;padding:4px 0}
.prose ol{color:var(--muted)}
.prose code{background:var(--surface-2);border:1px solid var(--border);border-radius:5px;padding:1px 6px;font-size:13.5px}

/* footer */
.site-footer{border-top:1px solid var(--border);margin-top:30px;padding:28px 0;color:var(--muted);font-size:13.5px}
.site-footer p{margin:4px 0}
.muted{color:var(--faint)}

@media (max-width:640px){
  .nav{gap:12px}.brand-text small{display:none}
  .filters{position:static}
  .hero{padding:34px 0 22px}
  .prose ul.cols{columns:1}
}