/* ============================================================================
   articles.css — Oyang Archive
   Lightweight companion-article views (Archery 射, Wrestling 摔, The Way 道,
   Everyday Dress 服). Scoped under .oa-artview so nothing here can leak into
   the home / volume / tool views.

   Theming: each view sets --acc (light accent) and --accd (dark accent) inline
   on its root. Light rules use var(--acc); dark rules (html[data-theme="dark"])
   use var(--accd) plus the shared --d-* tokens defined in theme.css. Because
   these surfaces are stylesheet-driven (not inline), dark mode is handled here
   explicitly rather than by theme.js colour-tagging.
   ============================================================================ */

.oa-artview{
  --ink:#14110f; --ink2:#26221e; --ink3:#4b4540; --mut:#7a736b;
  --bg:#f6f5f2; --surf:#ffffff; --surf2:#faf8f4; --bd:#e4e0d8; --bds:#d8d2c7;
  --fs-body:17px; --lh-body:1.72; --measure:702px;
  background:var(--bg); color:var(--ink);
  font-family:'Source Serif 4',Georgia,serif;
}
html[data-theme="dark"] .oa-artview{
  --ink:var(--d-text); --ink2:var(--d-text); --ink3:var(--d-text-2); --mut:var(--d-text-3);
  --bg:var(--d-bg); --surf:var(--d-surface); --surf2:var(--d-surface-2);
  --bd:var(--d-border); --bds:var(--d-border-strong); --acc:var(--accd);
  background:var(--d-bg); color:var(--d-text);
}

/* ---------- reveal / parallax ---------- */
.oa-artview [data-reveal]{opacity:0;transform:translateY(18px);
  transition:opacity .7s var(--ease-io,ease),transform .7s var(--ease-io,ease)}
.oa-artview [data-reveal].oa-in{opacity:1;transform:none}
.oa-artview [data-rule]{transform:scaleX(0);transform-origin:left center;
  transition:transform .8s var(--ease-io,ease)}
.oa-artview [data-reveal].oa-in [data-rule]{transform:scaleX(1)}
@media (prefers-reduced-motion:reduce){
  .oa-artview [data-reveal]{opacity:1!important;transform:none!important}
  .oa-artview [data-rule]{transform:scaleX(1)!important}
}

/* ---------- hero ---------- */
.oa-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--bd);background:var(--bg)}
.oa-hero-bg{position:absolute;top:50%;left:50%;transform:translate(-50%,-46%);
  font-family:'Noto Serif TC',serif;font-weight:900;font-size:min(52vw,560px);
  line-height:.8;color:var(--acc);opacity:.05;white-space:nowrap;pointer-events:none;
  user-select:none;z-index:0}
html[data-theme="dark"] .oa-hero-bg{opacity:.09}
.oa-hero-inner{position:relative;z-index:1;max-width:760px;margin:0 auto;
  padding:92px 28px 58px;text-align:center}
.oa-kicker{font-family:'Inter',sans-serif;font-size:11px;font-weight:600;
  letter-spacing:.2em;text-transform:uppercase;color:var(--acc);margin-bottom:13px}
.oa-hero-sub{font-family:'Spectral',serif;font-style:italic;font-size:17px;
  color:var(--mut);margin:0 0 18px}
.oa-hero-h1{font-family:'Spectral',serif;font-weight:800;
  font-size:clamp(38px,5.6vw,66px);line-height:1.02;letter-spacing:-1.4px;
  margin:0 0 22px;text-wrap:balance;color:var(--ink)}
.oa-hero-lede{font-family:'Spectral',serif;font-style:italic;font-size:20px;
  line-height:1.5;color:var(--ink3);margin:0 auto 26px;max-width:600px;text-wrap:pretty}
.oa-byline{display:flex;flex-wrap:wrap;gap:8px 14px;justify-content:center;
  align-items:center;font-family:'Inter',sans-serif;font-size:13px;color:var(--mut)}
.oa-dot{width:4px;height:4px;border-radius:50%;background:var(--bds)}
.oa-dl{color:var(--acc);text-decoration:none;font-weight:600}
.oa-dl:hover{text-decoration:underline}
.oa-zh{font-family:'Noto Serif TC',serif}

/* ---------- article container ---------- */
.oa-art{max-width:760px;margin:0 auto;padding:0 28px}

/* ---------- contents chip row ---------- */
.oa-toc{display:flex;flex-wrap:wrap;gap:8px;align-items:center;
  padding:30px 0 6px;border-bottom:1px solid var(--bd);margin-bottom:8px}
.oa-toc-lbl{font-family:'Inter',sans-serif;font-size:10.5px;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--mut);margin-right:4px}
.oa-toc a{font-family:'Inter',sans-serif;font-size:12.5px;color:var(--ink3);
  text-decoration:none;padding:6px 11px;border:1px solid var(--bd);border-radius:20px;
  background:var(--surf);transition:.15s;line-height:1.2}
.oa-toc a b{color:var(--acc);font-weight:700;margin-right:3px}
.oa-toc a:hover{border-color:var(--acc);color:var(--ink)}
.oa-toc a.is-active{border-color:var(--acc);background:var(--acc);color:#fff}
.oa-toc a.is-active b{color:#fff;opacity:.85}
html[data-theme="dark"] .oa-toc a.is-active{color:#17130f}
html[data-theme="dark"] .oa-toc a.is-active b{color:#17130f}

/* ---------- summary + source note ---------- */
.oa-summary{margin:34px 0 8px;padding:26px 28px;background:var(--surf2);
  border:1px solid var(--bd);border-left:3px solid var(--acc);border-radius:12px}
.oa-summary-lbl{font-family:'Inter',sans-serif;font-size:10.5px;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--acc);margin-bottom:10px}
.oa-summary p{font-size:16px;line-height:1.68}
.oa-srcnote{margin:30px 0}
.oa-h2plain{font-family:'Spectral',serif;font-weight:700;font-size:22px;
  letter-spacing:-.3px;color:var(--ink);margin:0 0 12px}

/* ---------- chapters ---------- */
.oa-chap{margin:0;scroll-margin-top:96px}
.oa-chaphd{position:relative;margin:92px 0 26px;padding-top:28px}
.oa-rule{position:absolute;top:0;left:0;width:100%;height:2px;background:var(--acc)}
.oa-chapmeta{display:flex;align-items:center;gap:12px;margin-bottom:13px}
.oa-badge{flex:0 0 auto;width:34px;height:34px;border-radius:9px;background:var(--acc);
  color:#fff;display:inline-flex;align-items:center;justify-content:center;
  font-family:'Spectral',serif;font-weight:700;font-size:15px;
  box-shadow:0 5px 14px rgba(20,17,15,.16)}
html[data-theme="dark"] .oa-badge{color:#17130f}
.oa-chapmeta .oa-kicker{margin-bottom:0}
.oa-h2{font-family:'Spectral',serif;font-weight:800;font-size:clamp(26px,3.6vw,40px);
  line-height:1.06;letter-spacing:-.7px;color:var(--ink);margin:0;max-width:770px}
.oa-h3{font-family:'Spectral',serif;font-weight:700;font-size:21px;line-height:1.2;
  letter-spacing:-.3px;color:var(--ink);margin:38px 0 6px;max-width:var(--measure)}

/* ---------- body copy ---------- */
.oa-art p{font-size:var(--fs-body);line-height:var(--lh-body);color:var(--ink2);
  margin:0 0 20px;max-width:var(--measure);text-wrap:pretty}
.oa-art a{color:var(--acc)}
.oa-drop::first-letter{float:left;font-family:'Spectral',serif;font-weight:800;
  font-size:62px;line-height:.82;color:var(--acc);margin:6px 10px 0 0}
.oa-art em{font-style:italic}
.oa-art strong{font-weight:700;color:var(--ink)}
.oa-sc{font-variant:small-caps;letter-spacing:.02em}

/* ---------- lists ---------- */
.oa-list{max-width:var(--measure);margin:0 0 20px;padding-left:22px}
.oa-list li{font-size:16px;line-height:1.62;color:var(--ink2);margin:7px 0}
.oa-list li::marker{color:var(--acc)}

/* ---------- quotes ---------- */
.oa-classical,.oa-quote{max-width:var(--measure);margin:26px 0;padding:20px 26px;
  border-left:3px solid var(--acc);background:var(--surf2);border-radius:0 10px 10px 0}
.oa-classical p,.oa-quote p{font-family:'Spectral',serif;font-style:italic;
  font-size:16.5px;line-height:1.6;color:var(--ink2);margin:0 0 10px}
.oa-qsrc{display:block;font-family:'Inter',sans-serif;font-style:normal;
  font-size:12.5px;color:var(--mut);margin-top:6px}

/* ---------- tables ---------- */
.oa-tablewrap{max-width:var(--measure);overflow-x:auto;margin:24px 0;
  border:1px solid var(--bd);border-radius:11px;background:var(--surf)}
.oa-table{border-collapse:collapse;width:100%;min-width:460px}
.oa-table th{font-family:'Inter',sans-serif;font-size:12px;font-weight:600;
  letter-spacing:.04em;text-transform:uppercase;text-align:left;color:var(--mut);
  padding:12px 15px;border-bottom:1px solid var(--bds);background:var(--surf2)}
.oa-table td{font-size:14.5px;line-height:1.5;color:var(--ink2);padding:11px 15px;
  border-bottom:1px solid var(--bd);vertical-align:top}
.oa-table tr:last-child td{border-bottom:none}

/* ---------- glossary tooltip terms ---------- */
.oa-term{border-bottom:1px dotted var(--acc);cursor:help;color:inherit}
.oa-tip{position:fixed;z-index:120;max-width:280px;background:var(--ink);
  color:var(--bg);font-family:'Inter',sans-serif;font-size:12.5px;line-height:1.45;
  padding:9px 12px;border-radius:9px;box-shadow:0 14px 34px rgba(20,17,15,.28);
  pointer-events:none;opacity:0;transform:translateY(4px);transition:.14s}
.oa-tip.on{opacity:1;transform:none}
html[data-theme="dark"] .oa-tip{background:var(--d-surface-3);color:var(--d-text);
  border:1px solid var(--d-border-strong)}

/* ---------- footnotes ---------- */
.oa-fnref{font-size:.62em;line-height:0}
.oa-fnref a{color:var(--acc);text-decoration:none;font-weight:600;padding:0 1px}
.oa-notelist{max-width:var(--measure);margin:0;padding-left:26px}
.oa-notelist li{font-family:'Source Serif 4',serif;font-size:13.5px;line-height:1.6;
  color:var(--ink3);margin:0 0 12px;scroll-margin-top:96px}
.oa-notelist li:target{background:color-mix(in srgb,var(--acc) 12%,transparent);
  border-radius:6px;padding:4px 8px;margin-left:-8px}
.oa-fnback{margin-left:6px;text-decoration:none;color:var(--acc)}

/* ---------- CTA ---------- */
.oa-ctawrap{margin:92px 0 40px;padding-top:34px;border-top:1px solid var(--bd)}
.oa-cta-lbl{font-family:'Inter',sans-serif;font-size:10.5px;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--mut);margin-bottom:18px;
  text-align:center}
.oa-cta{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px}
.oa-cta-card{position:relative;overflow:hidden;text-align:left;background:var(--surf);
  border:1px solid var(--bd);border-radius:13px;padding:22px 22px 20px;cursor:pointer;
  font-family:inherit;display:flex;flex-direction:column;gap:6px;transition:.18s}
.oa-cta-card:hover{border-color:var(--acc);transform:translateY(-3px);
  box-shadow:0 16px 38px rgba(20,17,15,.10)}
.oa-cta-char{position:absolute;top:-14px;right:2px;font-family:'Noto Serif TC',serif;
  font-weight:900;font-size:96px;line-height:1;color:var(--acc);opacity:.07}
.oa-cta-t{font-family:'Spectral',serif;font-weight:700;font-size:18px;color:var(--ink);
  position:relative}
.oa-cta-d{font-size:14px;line-height:1.5;color:var(--ink3);position:relative;flex:1}
.oa-cta-go{font-family:'Inter',sans-serif;font-size:13px;font-weight:600;
  color:var(--acc);position:relative}

/* ---------- interactive widgets ---------- */
.oa-widget{max-width:var(--measure);margin:30px 0 26px;border:1px solid var(--bd);
  border-radius:14px;background:var(--surf);overflow:hidden}
.oa-w-head{display:flex;align-items:center;gap:12px;padding:16px 20px;
  border-bottom:1px solid var(--bd);background:var(--surf2)}
.oa-w-char{font-family:'Noto Serif TC',serif;font-size:26px;color:var(--acc);line-height:1}
.oa-w-title{font-family:'Spectral',serif;font-weight:700;font-size:16px;color:var(--ink)}
.oa-w-sub{font-family:'Inter',sans-serif;font-size:11px;color:var(--mut);
  letter-spacing:.04em;margin-top:2px}
.oa-w-steps{display:flex;flex-wrap:wrap;gap:7px;padding:16px 20px 4px}
.oa-w-step{font-family:'Inter',sans-serif;font-size:12.5px;color:var(--ink3);
  background:var(--bg);border:1px solid var(--bd);border-radius:8px;padding:8px 12px;
  cursor:pointer;transition:.15s;display:flex;align-items:center;gap:7px;line-height:1.15}
.oa-w-step .zh{font-family:'Noto Serif TC',serif;color:var(--acc);font-size:14px}
.oa-w-step:hover{border-color:var(--acc)}
.oa-w-step.on{background:var(--acc);border-color:var(--acc);color:#fff}
.oa-w-step.on .zh{color:#fff;opacity:.9}
html[data-theme="dark"] .oa-w-step.on{color:#17130f}
html[data-theme="dark"] .oa-w-step.on .zh{color:#17130f}
.oa-w-num{width:20px;height:20px;border-radius:50%;background:var(--bd);color:var(--ink3);
  display:inline-flex;align-items:center;justify-content:center;font-size:11px;font-weight:600}
.oa-w-step.on .oa-w-num{background:rgba(255,255,255,.28);color:#fff}
.oa-w-panel{padding:6px 20px 20px}
.oa-w-ptitle{font-family:'Spectral',serif;font-weight:700;font-size:17px;color:var(--ink);
  margin:12px 0 6px}
.oa-w-pbody{font-size:15px;line-height:1.62;color:var(--ink2);margin:0}
.oa-w-panel.swap{animation:oaFade .32s var(--ease-io,ease)}
@keyframes oaFade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.oa-w-meter{height:6px;border-radius:4px;background:var(--bd);margin:14px 20px 0;overflow:hidden}
.oa-w-meterfill{height:100%;background:var(--acc);width:0;transition:width .4s var(--ease-io,ease)}
/* dao balance diagram */
.oa-balance{display:flex;flex-direction:column;align-items:center;gap:0;padding:22px 20px 6px}
.oa-bl-apex{font-family:'Noto Serif TC',serif;font-size:22px;color:var(--acc);
  padding:8px 16px;border:1px solid var(--acc);border-radius:22px;background:var(--surf2);
  cursor:pointer;transition:.15s}
.oa-bl-apex:hover{background:var(--acc);color:#fff}
html[data-theme="dark"] .oa-bl-apex:hover{color:#17130f}
.oa-bl-wings{display:flex;gap:14px;margin:14px 0}
.oa-bl-node{font-family:'Noto Serif TC',serif;font-size:26px;width:64px;height:64px;
  display:flex;align-items:center;justify-content:center;border-radius:14px;cursor:pointer;
  border:1px solid var(--bd);background:var(--bg);transition:.15s}
.oa-bl-node:hover,.oa-bl-node.on{border-color:var(--acc);background:var(--acc);color:#fff}
html[data-theme="dark"] .oa-bl-node.on,html[data-theme="dark"] .oa-bl-node:hover{color:#17130f}
.oa-bl-stem{width:1px;height:16px;background:var(--bds)}

/* ---------- responsive ---------- */
@media (max-width:720px){
  .oa-hero-inner{padding:66px 22px 44px}
  .oa-art{padding:0 20px}
  .oa-chaphd{margin-top:64px}
  .oa-drop::first-letter{font-size:52px}
  .oa-cta{grid-template-columns:1fr}
}
@media (max-width:480px){
  .oa-artview{--fs-body:16px}
  .oa-toc a{font-size:12px;padding:5px 9px}
}