/* AAHA Trends 中文导读 —— 仅使用系统字体（中国大陆可正常访问，不依赖 Google Fonts） */
:root{
  --ink:#16202c; --ink2:#3a4654; --muted:#6a7380; --line:#e5e0d6; --paper:#fbfaf6; --card:#fff;
  --navy:#0f2741; --teal:#0e6f6b; --teal-l:#e3f1ee; --coral:#c2452d; --coral-l:#fbe9e2;
  --amber:#b7791f; --steel:#1d3557; --steel-l:#e6edf5;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong","SimSun",Georgia,serif;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  --r:14px; --shadow:0 1px 2px rgba(16,32,48,.05),0 6px 24px rgba(16,32,48,.06);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.75 var(--sans);overflow-x:hidden}
a{color:inherit}
img,svg{max-width:100%}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.narrow{max-width:780px}
.muted{color:var(--muted)}
.skip{position:absolute;left:-999px;top:0;background:var(--navy);color:#fff;padding:8px 14px;z-index:99}
.skip:focus{left:8px}
:focus-visible{outline:3px solid #f2b134;outline-offset:2px;border-radius:4px}

/* masthead */
.masthead{background:var(--navy);color:#fff;position:sticky;top:0;z-index:20}
.mast-row{display:flex;align-items:center;gap:16px;height:64px}
.brand{display:flex;align-items:baseline;gap:12px;text-decoration:none}
.brand-mark{font:800 26px/1 Georgia,"Times New Roman",serif;letter-spacing:.12em}
.brand-mark.sm{font-size:22px;color:var(--navy)}
.brand-sub{font-size:12px;letter-spacing:.14em;opacity:.75}
.org{margin-left:auto;text-decoration:none;font:700 15px/1.1 Georgia,serif;letter-spacing:.1em;display:flex;flex-direction:column;align-items:flex-end}
.org span{font:400 11px/1.4 var(--sans);letter-spacing:.08em;opacity:.7}
.menu-btn{display:none;background:none;border:1px solid rgba(255,255,255,.35);color:#fff;border-radius:8px;padding:6px 12px;font:inherit;font-size:14px}
.sitenav{background:#0b1e33;border-top:1px solid rgba(255,255,255,.08)}
.sitenav .wrap{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}
.sitenav a{color:#d8e1ea;text-decoration:none;font-size:15px;padding:11px 12px;white-space:nowrap;border-bottom:3px solid transparent}
.sitenav a:hover{color:#fff}
.sitenav a[aria-current]{color:#fff;border-bottom-color:#5fb8a6}
.sitenav a.ext{margin-left:auto;opacity:.8}

/* hero */
.hero{background:linear-gradient(180deg,var(--navy) 0,#163556 100%);color:#fff;padding:56px 0 64px}
.hero-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center}
.eyebrow{font-size:12px;letter-spacing:.22em;color:var(--teal);font-weight:700;margin:0 0 10px}
.hero .eyebrow{color:#8fd3c5}
.hero h1{font:700 clamp(34px,5vw,54px)/1.2 var(--serif);margin:0 0 18px}
.hero h1 em{font-style:normal;color:#8fd3c5}
.lead{font-size:18px;color:var(--ink2);margin:0 0 22px}
.hero .lead{color:#c9d6e3}
.cta{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 18px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--ink);text-decoration:none;font:600 15px/1.2 var(--sans);cursor:pointer}
.btn:hover{border-color:var(--ink2)}
.btn.primary{background:var(--teal);border-color:var(--teal);color:#fff}
.btn.primary:hover{background:#0b5b58}
.hero .btn:not(.primary){background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.chips{list-style:none;padding:0;margin:26px 0 0;display:flex;gap:10px;flex-wrap:wrap}
.chips li{font-size:13px;border:1px solid rgba(255,255,255,.25);padding:4px 12px;border-radius:999px;color:#d8e1ea}
.feature{display:block;border-radius:20px;overflow:hidden;background:#fff;color:var(--ink);text-decoration:none;box-shadow:0 20px 60px rgba(0,0,0,.3);transition:transform .2s}
.feature:hover{transform:translateY(-3px)}
.feature .cover{display:block;aspect-ratio:16/9;width:100%;height:auto}
.feature-body{padding:20px 24px 24px;display:flex;flex-direction:column;gap:6px}
.feature .tag{font-size:12px;letter-spacing:.14em;color:var(--teal);font-weight:700}
.fmeta{font-size:13px;color:var(--muted)}
.feature strong{font:700 22px/1.4 var(--serif)}
.go{color:var(--teal);font-weight:600;font-size:15px}

/* sections */
section{scroll-margin-top:120px}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin:56px 0 20px;border-bottom:2px solid var(--ink);padding-bottom:10px;flex-wrap:wrap}
.sec-head h2{font:700 26px/1.3 var(--serif);margin:0;display:flex;align-items:center;gap:10px}
.sec-head h2 small{font:500 13px var(--sans);letter-spacing:.12em;color:var(--muted);text-transform:uppercase}
.more{font-weight:600;text-decoration:none;color:var(--teal)}
.dot{width:12px;height:12px;border-radius:50%;background:var(--c,var(--teal));display:inline-block}
.cat-clinical{--c:var(--teal);--cl:var(--teal-l)}
.cat-culture{--c:var(--coral);--cl:var(--coral-l)}
.cat-management{--c:var(--steel);--cl:var(--steel-l)}

.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.catgrid{display:grid;grid-template-columns:1.2fr 1fr;gap:24px}
.stack{display:flex;flex-direction:column;gap:14px}

/* cards */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow);transition:box-shadow .2s,transform .2s}
.card:hover{box-shadow:0 10px 30px rgba(16,32,48,.12);transform:translateY(-2px)}
.card-cover .cover{display:block;width:100%;aspect-ratio:16/9;height:auto}
.card-body{padding:16px 18px 14px;display:flex;flex-direction:column;flex:1;border-top:4px solid var(--c)}
.card.row .card-body{border-top:0;border-left:4px solid var(--c)}
.card-meta{display:flex;gap:10px;font-size:13px;color:var(--muted);align-items:center}
.card-meta .cat{color:var(--c);font-weight:700;text-decoration:none}
.card h3{font:700 19px/1.45 var(--serif);margin:6px 0 2px}
.card h3 a{text-decoration:none}
.card h3 a:hover{text-decoration:underline;text-underline-offset:3px}
.en{font:italic 14px/1.5 Georgia,serif;color:var(--muted);margin:0 0 8px}
.en.big{font-size:17px}
.card-sum{font-size:15px;color:var(--ink2);margin:0 0 12px}
.card-foot{margin-top:auto;display:flex;flex-wrap:wrap;gap:6px 12px;align-items:center;font-size:13px;color:var(--muted)}
.card-foot .by{max-width:16em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.badge{font-size:12px;font-weight:600;padding:2px 9px;border-radius:999px;background:var(--cl,#eee);color:var(--c,#333);white-space:nowrap}
.t-podcast{background:#efe7f7;color:#5b3a86}
.t-record{background:#f0eee9;color:#6a6458}
.t-guide{background:#fff3d6;color:#8a5a00}
.t-full{background:#e2f2e6;color:#226b38}
.mark{margin-left:auto;background:none;border:1px solid var(--line);border-radius:999px;padding:2px 10px;font:inherit;font-size:12px;color:var(--muted);cursor:pointer}
.mark[aria-pressed=true]{background:#f2b134;border-color:#f2b134;color:#3b2a00}
.mark[aria-pressed=true]::before{content:"★ "}
.btn.mark{margin-left:0;font-size:15px;padding:10px 18px}

/* podcast band */
.podband{background:#f1ede4;margin-top:56px;padding:4px 0 48px}
.podlist{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:16px}

/* library */
.lib-grid{display:grid;grid-template-columns:260px 1fr;gap:32px}
.side h3{font-size:14px;letter-spacing:.1em;color:var(--muted);margin:0 0 10px}
.catcount{list-style:none;padding:0;margin:0 0 28px}
.catcount a{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--line);text-decoration:none}
.catcount b{font:700 18px Georgia,serif;color:var(--teal)}
.tagcloud{display:flex;flex-wrap:wrap;gap:8px}
.tagbtn{border:1px solid var(--line);background:#fff;border-radius:999px;padding:4px 10px;font:inherit;font-size:13px;cursor:pointer}
.tagbtn small{color:var(--muted);margin-left:4px}
.tagbtn[aria-pressed=true]{background:var(--navy);border-color:var(--navy);color:#fff}
.tagbtn[aria-pressed=true] small{color:#c9d6e3}
.filters{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:12px;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:16px}
.filters label{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--muted);letter-spacing:.06em;min-width:0}
.filters input,.filters select{font:inherit;font-size:15px;color:var(--ink);padding:9px 10px;border:1px solid var(--line);border-radius:10px;background:#fbfaf6;width:100%}
.result-line{font-size:14px;color:var(--muted)}
.result-line b{color:var(--ink)}
.result-line a{margin-left:8px;color:var(--teal)}
.results{display:flex;flex-direction:column;gap:14px}
.empty{padding:28px;text-align:center;border:1px dashed var(--line);border-radius:var(--r);color:var(--muted)}

.steps{background:var(--navy);color:#fff;margin-top:64px;padding:40px 0}
.steps h2{font:700 24px var(--serif);margin:0 0 18px}
.steps ol{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.steps li{border-top:1px solid rgba(255,255,255,.25);padding-top:12px;color:#d8e1ea}
.steps b{display:block;font:700 28px Georgia,serif;color:#8fd3c5}

/* page head */
.pagehead{background:linear-gradient(135deg,var(--cl,#eef2f6),#fbfaf6);padding:48px 0 32px;border-bottom:1px solid var(--line);margin-bottom:8px}
.pagehead.pod{--cl:#efe7f7}
.pagehead h1{font:700 40px/1.2 var(--serif);margin:0 0 10px}
.pagehead .eyebrow{color:var(--c,var(--teal))}
.pagehead + .wrap .grid3,.pagehead + .wrap .results{margin-top:32px}

/* article */
.art-head{padding:40px 0 20px;background:linear-gradient(180deg,var(--cl),var(--paper))}
.crumbs{font-size:14px;color:var(--muted)}
.crumbs a{text-decoration:none;color:var(--c)}
.art-meta{display:flex;gap:12px;align-items:center;font-size:14px;color:var(--muted);margin:14px 0 8px;flex-wrap:wrap}
.art-head h1{font:700 clamp(28px,4vw,40px)/1.3 var(--serif);margin:0 0 8px}
.byline{color:var(--ink2);margin:0 0 18px}
.anote{display:block;font-size:14px;color:var(--muted)}
.art-actions,.listen{display:flex;gap:10px;flex-wrap:wrap}
.listen{margin-top:12px}
.art-cover .cover{display:block;width:100%;aspect-ratio:16/9;height:auto;border-radius:18px;margin:12px 0 8px}
.tldr{background:#fff;border:1px solid var(--line);border-left:5px solid var(--c);border-radius:12px;padding:16px 20px;margin:24px 0}
.tldr b{font-size:13px;letter-spacing:.12em;color:var(--c)}
.tldr p{margin:4px 0 0;font-size:17px}
.prose{font-size:17px;line-height:1.9}
.prose h2{font:700 24px/1.4 var(--serif);margin:36px 0 12px;padding-left:12px;border-left:4px solid var(--c,var(--teal))}
.prose li{margin:8px 0}
.prose li::marker{color:var(--c,var(--teal));font-weight:700}
.prose strong{background:linear-gradient(transparent 62%,var(--cl,#e3f1ee) 62%)}
.prose .tbl{overflow-x:auto;margin:12px 0}
.prose table{border-collapse:collapse;width:100%;font-size:15px}
.prose th,.prose td{border-bottom:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.prose th{background:#f1ede4;font-weight:700}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin:28px 0}
.tagpill{font-size:13px;text-decoration:none;border:1px solid var(--line);border-radius:999px;padding:3px 12px;background:#fff}
.source-box{font-size:14px;color:var(--ink2);background:#f1ede4;border-radius:12px;padding:16px 20px}
.source-box p{margin:4px 0}
.source-box a{color:var(--teal)}
.related .sec-head{margin-top:48px}
.about table{font-size:15px}

/* footer */
.footer{margin-top:72px;border-top:1px solid var(--line);background:#fff;padding:36px 0 28px;font-size:14px}
.foot-grid{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
.foot-grid p{margin:4px 0}
.foot-links{display:flex;flex-direction:column;gap:6px}
.foot-links a{color:var(--teal);text-decoration:none}
.foot-note{margin-top:24px;padding-top:16px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}
.foot-note p{margin:4px 0}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--ink);color:#fff;padding:10px 18px;border-radius:999px;font-size:14px;z-index:50}

/* responsive */
@media (max-width:960px){
  .hero-grid,.catgrid,.lib-grid{grid-template-columns:1fr}
  .grid3{grid-template-columns:1fr 1fr}
  .filters{grid-template-columns:1fr 1fr}
  .f-q{grid-column:1/-1}
  .side{order:2}
}
@media (max-width:640px){
  .wrap{padding:0 16px}
  .brand-sub,.org span{display:none}
  .menu-btn{display:block}
  .org{margin-left:auto}
  .sitenav{display:none}
  .sitenav.open{display:block}
  .sitenav .wrap{flex-direction:column;gap:0}
  .sitenav a{border-bottom:1px solid rgba(255,255,255,.06)}
  .sitenav a.ext{margin-left:0}
  .hero{padding:36px 0 44px}
  .grid3,.podlist,.steps ol{grid-template-columns:1fr}
  .filters{grid-template-columns:1fr}
  .sec-head h2{font-size:22px}
  .pagehead h1{font-size:30px}
  .prose{font-size:16px}
}
@media print{.masthead,.footer,.art-actions,.related,.listen{display:none}body{background:#fff}}

/* full-text translations */
.toc{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 20px;margin:0 0 24px;font-size:15px}
.toc b{font-size:13px;letter-spacing:.12em;color:var(--muted)}
.toc ol{margin:6px 0 0;padding-left:1.4em}
.toc a{color:var(--ink2);text-decoration:none}
.toc a:hover{color:var(--c);text-decoration:underline}
.prose img{max-width:100%;height:auto;border-radius:10px;display:block;margin:16px auto}
.prose figure{margin:20px 0}
.prose figcaption,.prose img + em{display:block;font-size:14px;color:var(--muted);text-align:center}
.prose blockquote{margin:16px 0;padding:8px 18px;border-left:4px solid var(--line);color:var(--ink2);background:#fff}
.prose h3{font:700 19px/1.5 var(--serif);margin:26px 0 8px}
.prose .footnote{font-size:14px;color:var(--muted)}
.prose h2,.prose h3{scroll-margin-top:120px}