/* ═══════════════════════════════════════════════════════════════
   AVC v2 — 03 method: A · DT simulator (auto-playing closed loop),
   B · Bayesian MH-MCMC search (recorded run, replayable)
   ═══════════════════════════════════════════════════════════════ */
#method{ --sec-bg:var(--bg); --light-at:14% 0%; --light-size:50% 40%; }

/* ── method article: header · stage | side ──────────────────────── */
.mt{ position:relative; display:grid; grid-template-columns:minmax(0, 7.6fr) minmax(0, 4.4fr); gap:22px clamp(24px, 3vw, 44px);
  padding:clamp(22px, 2.4vw, 32px); border-radius:var(--r-xl); border:1px solid transparent;
  background:radial-gradient(70% 60% at 10% 0%, rgba(40,120,240,.06), transparent 64%) padding-box, linear-gradient(180deg, var(--panel-a), var(--panel-b)) padding-box,
    linear-gradient(180deg, var(--rim), rgba(175,205,245,.07) 34%, rgba(175,205,245,.05)) border-box;
  box-shadow:var(--sh-panel); }
.mt + .mt{ margin-top:20px; }
.mt-head{ grid-column:1 / -1; display:flex; align-items:flex-start; gap:16px; }
.mt-titles{ flex:1; min-width:0; }
.mt-kicker{ display:flex; flex-wrap:wrap; align-items:center; gap:8px 10px; font-family:var(--small); font-size:12.5px; font-weight:600; letter-spacing:.12em; text-transform:uppercase; color:#8fb2df; }
html[data-lang="ko"] .mt-kicker{ font-size:13px; letter-spacing:.02em; text-transform:none; }
.mt-kicker > span:not(.lbl){ white-space:nowrap; }
.mt-title{ margin-top:10px; font-family:var(--display); font-size:var(--fs-h3); line-height:1.25; letter-spacing:var(--ls-h3); font-weight:600; color:var(--text); }
html[data-lang="ko"] .mt-title{ line-height:1.42; letter-spacing:-.016em; }
.mt-text{ margin-top:8px; max-width:74ch; font-size:15px; line-height:1.62; color:var(--body); }
html[data-lang="ko"] .mt-text{ line-height:1.76; }
.mt-head .demo-link{ flex:none; margin-top:2px; }

/* ═══ A · DT simulator ═════════════════════════════════════════════ */
.dt-stage{ position:relative; padding:16px 18px 14px; min-width:0; }
.dt-clock{ display:flex; align-items:center; gap:14px; margin-bottom:6px; font-family:var(--small); font-size:12.5px; font-weight:600; color:var(--dim); font-variant-numeric:tabular-nums; }
.dt-clock__k{ color:var(--acc-hi); letter-spacing:.02em; min-width:5.2em; }
.dt-clock__t{ color:var(--body); }
.dt-clock__bar{ position:relative; flex:1; height:2px; border-radius:1px; background:rgba(140,175,225,.12); overflow:hidden; }
.dt-clock__bar i{ position:absolute; inset:0; transform-origin:0 50%; transform:scaleX(0); background:linear-gradient(90deg, var(--acc-deep), var(--acc-glow)); }
.dt-svg{ display:block; max-width:calc(100% + 1px); height:auto; margin:4px auto 0; overflow:visible; }
.dt-trace{ position:relative; height:206px; margin-top:10px; border-top:1px solid rgba(140,175,225,.08); padding-top:8px; }
.dt-canvas{ position:absolute; left:0; top:10px; width:100%; height:calc(100% - 10px); }

/* diagram vocabulary */
.dt-w{ fill:none; stroke:rgba(140,175,225,.36); stroke-width:1.25; transition:stroke .3s var(--ease); }
.dt-w.is-on{ stroke:#a8ceff; stroke-width:1.6; }
.dt-ah{ fill:rgba(140,175,225,.5); }
.dt-ah--on{ fill:#cfe5ff; }
.dt-b__box{ fill:#0b1628; stroke:rgba(140,175,225,.26); stroke-width:1; transition:stroke .35s var(--ease), fill .35s var(--ease); }
.dt-b--m .dt-b__box{ fill:#0c1a30; stroke:rgba(110,170,255,.34); }
.dt-b--c .dt-b__box{ fill:#0d1a2c; stroke:rgba(170,198,240,.30); }
.dt-b--d .dt-b__box{ fill:#09121f; stroke:rgba(140,175,225,.20); stroke-dasharray:3 3; }
.dt-b__glow{ fill:none; stroke:rgba(60,150,255,.9); stroke-width:6; opacity:0; transition:opacity .35s var(--ease); }
.dt-b__rim{ stroke:rgba(255,255,255,.10); stroke-width:1; }
.dt-b.is-on .dt-b__box{ fill:#10264a; stroke:rgba(150,205,255,.85); }
.dt-b.is-on .dt-b__glow{ opacity:.45; }
.dt-bn{ font:600 14px var(--display); fill:var(--text); letter-spacing:-.006em; }
.dt-bs{ font:500 11.5px var(--small); fill:var(--dim); font-variant-numeric:tabular-nums; }
html[data-lang="ko"] .dt-bn{ font-size:14.5px; }
html[data-lang="ko"] .dt-bs{ font-size:12px; }
.dt-sx{ stroke:#cfe0f5; stroke-width:1.4; }
.dt-sg{ font:600 13px var(--small); fill:var(--dim); }
.dt-sy{ font:italic 500 13px var(--display); fill:#c9d6e8; }
.dt-ss{ font-style:normal; font-size:11px; fill:var(--dim); }
.dt-tok{ fill:#ffffff; }
.dt-tok-glow{ fill:rgba(60,150,255,.35); filter:blur(3px); }

/* side: the four values that matter */
.dt-side{ display:flex; flex-direction:column; gap:16px; min-width:0; }
.dt-read{ display:grid; grid-template-columns:1fr 1fr; gap:1px; border-radius:var(--r-lg); overflow:hidden; background:rgba(140,175,225,.10); box-shadow:inset 0 0 0 1px rgba(140,175,225,.10); }
.dt-read > div{ padding:14px 16px 13px; background:linear-gradient(180deg, #0b1626, #08111e); }
.dt-read dt{ font-size:12.5px; line-height:1.35; font-weight:500; color:var(--dim); }
.dt-read dt i{ font-family:var(--display); font-size:12px; color:#7f97b6; margin-left:2px; }
.dt-read dd{ margin-top:6px; display:flex; align-items:baseline; gap:4px; }
.dt-read dd b{ font-family:var(--display); font-size:clamp(24px, 2vw, 30px); line-height:1; font-weight:500; letter-spacing:-.02em; color:var(--text); font-variant-numeric:tabular-nums; transition:color .35s var(--ease), text-shadow .35s var(--ease); }
.dt-read dd small{ font-size:13px; font-weight:500; color:var(--dim); }
.dt-read > div.is-on dd b{ color:#bfe0ff; text-shadow:0 0 18px rgba(60,150,255,.55); }
.dt-read > div[data-r="y"] dd b{ color:#e7f2ff; }
.dt-cap{ max-width:none; }
.dt-repro{ margin-top:auto; padding-top:16px; border-top:1px solid var(--line-soft); }
.dt-repro__k{ font-size:13.5px; line-height:1.4; font-weight:600; color:var(--text); }
.dt-repro__k em{ display:block; margin-top:2px; font-style:normal; font-size:12.5px; font-weight:400; color:var(--dim); }
.dt-repro__v{ margin-top:12px; display:grid; grid-template-columns:1fr 1fr; gap:12px; }
.dt-repro__v dt{ font-size:12.5px; color:var(--dim); }
.dt-repro__v dd{ margin-top:4px; display:flex; align-items:baseline; gap:3px; }
.dt-repro__v b{ font-family:var(--display); font-size:24px; line-height:1; font-weight:500; letter-spacing:-.02em; color:var(--text); font-variant-numeric:tabular-nums; }
.dt-repro__v small{ font-size:12.5px; color:var(--dim); }

/* ═══ B · MH-MCMC ═══════════════════════════════════════════════════ */
.mc-stage{ position:relative; padding:14px 16px 12px; min-width:0; }
.mc-bar{ display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap; padding:2px 2px 12px; border-bottom:1px solid rgba(140,175,225,.08); }
.mc-stats{ display:flex; flex-wrap:wrap; gap:8px 28px; }
.mc-stats dt{ font-size:12px; line-height:1.3; font-weight:500; color:var(--dim); }
.mc-stats dd{ margin-top:3px; display:flex; align-items:baseline; gap:5px; font-size:12.5px; color:var(--dim); font-variant-numeric:tabular-nums; }
.mc-stats dd b{ font-family:var(--display); font-size:22px; line-height:1; font-weight:500; letter-spacing:-.02em; color:var(--text); }
.mc-wrap{ position:relative; aspect-ratio:16 / 9.4; margin-top:8px; }
.mc-canvas{ position:absolute; inset:0; width:100%; height:100%; }

/* replay: a transport control whose ring shows the run's progress */
.replay{ display:inline-flex; align-items:center; gap:10px; height:40px; padding:0 14px 0 4px; border:0; border-radius:12px; cursor:pointer;
  font-family:var(--small); font-size:13.5px; font-weight:600; color:#d6e5f8; background:rgba(140,175,225,.05); box-shadow:inset 0 0 0 1px rgba(140,175,225,.18);
  transition:background-color var(--dur-hover) var(--ease), box-shadow var(--dur-hover) var(--ease), color var(--dur-hover) var(--ease); }
.replay:hover{ color:#fff; background:rgba(30,144,255,.08); box-shadow:inset 0 0 0 1px rgba(110,170,255,.42); }
.replay__ring{ position:relative; width:34px; height:34px; flex:none; }
.replay__ring svg:first-child{ position:absolute; inset:0; width:100%; height:100%; transform:rotate(-90deg); }
.replay__track{ fill:none; stroke:rgba(140,175,225,.16); stroke-width:2; }
.replay__prog{ fill:none; stroke:var(--acc-glow); stroke-width:2; stroke-linecap:round; stroke-dasharray:97.4; stroke-dashoffset:0; filter:drop-shadow(0 0 3px rgba(30,144,255,.8)); }
.replay__ic{ position:absolute; left:50%; top:50%; width:16px; height:16px; margin:-8px 0 0 -8px; fill:none; stroke:#cfe3ff; stroke-width:1.6; stroke-linecap:round; stroke-linejoin:round; transition:transform .5s var(--ease-out); }
.replay:hover .replay__ic{ transform:rotate(-60deg); }
.replay.is-playing .replay__label{ color:var(--acc-hi); }

/* side: legend, the loop, the note */
.mc-side{ display:flex; flex-direction:column; gap:18px; min-width:0; }
.mc-legend{ display:grid; gap:9px; padding:14px 16px; border-radius:var(--r-lg); background:linear-gradient(180deg, #0b1626, #08111e); box-shadow:inset 0 0 0 1px rgba(140,175,225,.10); }
.mc-legend li{ display:flex; align-items:center; gap:12px; font-size:13.5px; line-height:1.3; font-weight:500; color:var(--text); }
.mc-legend li > span{ display:flex; flex-wrap:wrap; align-items:baseline; gap:2px 10px; }
.mc-legend em{ font-style:normal; font-size:12.5px; font-weight:400; color:var(--dim); font-variant-numeric:tabular-nums; }
.mk{ position:relative; flex:none; width:22px; height:16px; }
.mk--den::before{ content:""; position:absolute; inset:1px 0; border-radius:50%; background:radial-gradient(closest-side, rgba(110,175,255,.7), rgba(40,120,255,.18) 70%, transparent); box-shadow:0 0 0 1px rgba(160,205,255,.0); }
.mk--den::after{ content:""; position:absolute; inset:1px 0; border-radius:50%; border:1px dashed rgba(160,205,255,.75); }
.mk--best::before{ content:""; position:absolute; left:50%; top:50%; width:12px; height:12px; margin:-6px 0 0 -6px; border-radius:50%; box-shadow:inset 0 0 0 1.5px #fff, 0 0 10px rgba(60,150,255,.8); }
.mk--best::after{ content:""; position:absolute; left:50%; top:50%; width:4px; height:4px; margin:-2px 0 0 -2px; border-radius:50%; background:#eaf4ff; }
.mk--base::before, .mk--base::after{ content:""; position:absolute; left:50%; top:50%; width:12px; height:1.8px; margin:-.9px 0 0 -6px; border-radius:1px; background:var(--s-base); transform:rotate(45deg); }
.mk--base::after{ transform:rotate(-45deg); }
.mk--acc::before{ content:""; position:absolute; left:50%; top:50%; width:7px; height:7px; margin:-3.5px 0 0 -3.5px; border-radius:50%; background:var(--s-rec); box-shadow:0 0 0 1px rgba(4,9,19,.9); }
.mk--rej::before{ content:""; position:absolute; left:50%; top:50%; width:6px; height:6px; margin:-3px 0 0 -3px; border-radius:50%; box-shadow:inset 0 0 0 1px rgba(150,164,182,.7); }

.mc-steps{ position:relative; display:grid; gap:10px; padding-left:16px; }
.mc-steps::before{ content:""; position:absolute; left:26.5px; top:22px; bottom:22px; width:1px; background:rgba(140,175,225,.24); }
.mc-steps::after{ content:""; position:absolute; left:0; top:11px; bottom:11px; width:12px; border:1px solid rgba(140,175,225,.36); border-right:0; border-radius:7px 0 0 7px; }
.mc-steps li{ position:relative; display:flex; align-items:flex-start; gap:12px; min-height:22px; font-size:13.5px; line-height:22px; font-weight:500; color:var(--text); }
.mc-steps li b{ position:relative; z-index:1; flex:none; display:grid; place-items:center; width:22px; height:22px; border-radius:50%; font-family:var(--display); font-size:11.5px; font-weight:700; color:var(--acc-hi);
  background:#0e1e38; box-shadow:inset 0 0 0 1px rgba(90,165,255,.5); font-variant-numeric:tabular-nums; }
.mc-steps li em{ display:block; font-style:normal; font-size:12.5px; line-height:18px; font-weight:400; color:var(--dim); }
.mc-cap{ max-width:none; }

/* ── responsive ─────────────────────────────────────────────────── */
@media (max-width:1100px){
  .mt{ grid-template-columns:1fr; }
  .dt-side{ display:grid; grid-template-columns:minmax(0, 1.3fr) minmax(0, 1fr); gap:16px 24px; align-items:start; }
  .dt-read{ grid-row:span 2; }
  .dt-repro{ margin-top:0; padding-top:0; border-top:0; }
  .mc-side{ display:grid; grid-template-columns:1fr 1fr; gap:16px 24px; align-items:start; }
  .mc-cap{ grid-column:1 / -1; }
}
@media (max-width:760px){
  .mt-head{ flex-wrap:wrap; }
  .mt-titles{ flex:1 1 calc(100% - 50px); }
  .mt-head .demo-link{ order:3; margin-left:50px; }
  .dt-side, .mc-side{ grid-template-columns:1fr; }
  .dt-read{ grid-row:auto; }
  .dt-trace{ height:190px; }
  .mc-wrap{ aspect-ratio:4 / 3.6; }
}
@media (max-width:600px){
  .mt{ padding:18px 14px; }
  .dt-stage, .mc-stage{ padding:12px 10px; }
  .mt-head .demo-link{ margin-left:0; }
}