.mer-screen, .mer-preview {
    --mer-gold: var(--ui-gold);
    --mer-jade: var(--ui-teal);
    --mer-panel: #111a27;
    --mer-panel-2: #0d1520;
    --mer-line: rgba(201, 162, 39, 0.28);
    --mer-title: #f5e6b0;
}

.mer-screen { margin: 8px; border: 1px solid var(--mer-line); border-radius: 14px; background: linear-gradient(180deg, #121c2a, #0c141e); box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.04); overflow: clip; color: var(--ui-text); font-size: 14px; }

.mer-head { display: flex; align-items: center; justify-content: center; gap: 12px; padding: 7px 14px; border-bottom: 1px solid var(--mer-line); flex-wrap: wrap; }
.mer-head h2 { margin: 0; font-size: 24px; font-weight: 700; color: var(--mer-title); letter-spacing: 0.5px; font-family: Georgia, serif; }
.mer-chips { display: flex; gap: 8px; flex-wrap: wrap; flex: 1; justify-content: center; }
.mer-chip { display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px; border: 1px solid var(--ui-border-strong); border-radius: 8px; background: var(--mer-panel-2); color: var(--ui-text); font-size: 13px; }
.mer-chip b { color: var(--ui-text-dim); font-weight: 500; }
.mer-head-actions { display: flex; align-items: center; gap: 8px; }

.mer-btn { font: inherit; font-size: 13px; padding: 7px 14px; border-radius: 8px; cursor: pointer; border: 1px solid var(--ui-border-strong); background: var(--mer-panel-2); color: var(--ui-text); min-height: 34px; }
.mer-btn--ghost:hover { border-color: var(--mer-jade); }
.mer-btn--gold { border-color: rgba(255, 215, 0, 0.6); color: #ffe27a; background: linear-gradient(180deg, rgba(255, 215, 0, 0.14), rgba(255, 215, 0, 0.04)); font-weight: 600; }
.mer-btn--gold:hover:not([disabled]) { background: linear-gradient(180deg, rgba(255, 215, 0, 0.24), rgba(255, 215, 0, 0.08)); }
.mer-btn[disabled] { opacity: 0.4; cursor: not-allowed; }
.mer-btn--block { width: 100%; }

.mer-toggle { display: inline-flex; align-items: center; gap: 8px; color: var(--ui-text-dim); font-size: 13px; cursor: pointer; }
.mer-toggle input { display: none; }
.mer-toggle i { width: 34px; height: 18px; border-radius: 999px; background: #22303f; position: relative; border: 1px solid var(--ui-border-strong); }
.mer-toggle i::after { content: ''; position: absolute; top: 2px; left: 2px; width: 12px; height: 12px; border-radius: 50%; background: var(--ui-text-dim); transition: left 0.2s; }
.mer-toggle input:checked + i { background: rgba(78, 205, 196, 0.3); border-color: var(--mer-jade); }
.mer-toggle input:checked + i::after { left: 18px; background: var(--mer-jade); }

.mer-strip { display: grid; grid-template-columns: auto minmax(0, 250px) minmax(0, 1fr); align-items: center; gap: 4px 14px; padding: 6px 14px; border-bottom: 1px solid var(--ui-border); background: rgba(13, 21, 32, 0.6); }
.mer-strip .mer-wuxing { width: 54px; flex: none; }
.mer-strip-values { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.mer-strip .mer-totals, .mer-strip .mer-utils { justify-content: flex-start; flex-wrap: wrap; }
.mer-strip .mer-totals span { padding: 2px 8px; }
.mer-strip .mer-util { padding: 2px 7px; font-size: 11px; }
.mer-strip-path { display: flex; flex-direction: column; gap: 1px; min-width: 0; max-width: 260px; }
.mer-strip-label { font-size: 10px; text-transform: uppercase; letter-spacing: 1px; color: var(--ui-text-mute); }
.mer-strip .mer-path-title { display: inline-flex; align-items: center; gap: 6px; font-size: 15px; }
.mer-strip .mer-path-sentence { margin: 0; font-size: 11px; line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.mer-wuxing { width: 150px; flex: none; }
.mer-path-title { margin: 0; font-weight: 700; color: var(--mer-gold); }
.mer-path-sentence { color: var(--ui-text-dim); }
.mer-totals { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; }
.mer-totals span { display: inline-flex; align-items: center; gap: 5px; padding: 4px 8px; border-radius: 6px; background: var(--mer-panel-2); color: var(--ui-text-dim); font-size: 12px; }
.mer-totals b { color: var(--ui-text); font-size: 14px; }
.mer-utils { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; }
.mer-util { display: inline-flex; align-items: center; gap: 5px; padding: 3px 8px; border-radius: 6px; background: rgba(78, 205, 196, 0.07); color: #bfeee8; font-size: 12px; }

.mer-wx-gen { stroke: rgba(78, 205, 196, 0.18); stroke-width: 1.2; }
.mer-wx-ctl { stroke: rgba(255, 255, 255, 0.06); stroke-width: 1; }
.mer-wx-rel { stroke-width: 2; }
.mer-wx-rel--consume, .mer-wx-rel--overpower, .mer-wx-rel--absorb { stroke: var(--ui-danger); stroke-dasharray: 3 2; }
.mer-wx-rel--spill, .mer-wx-rel--forge { stroke: var(--ui-gold); }
.mer-wx-rel--feed { stroke: #2ecc71; }
.mer-wx-rel--cycle { stroke: rgba(78, 205, 196, 0.8); }

.mer-main { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 12px; padding: 10px 12px; align-items: start; }

.mer-network { display: grid; grid-template-columns: minmax(190px, 1fr) minmax(170px, 240px) minmax(190px, 1fr); grid-template-rows: repeat(6, minmax(0, 1fr)); gap: 6px 12px; align-items: stretch; height: var(--mer-net-h, auto); }
.mer-figure { grid-column: 2; grid-row: 1 / span 6; position: relative; border-radius: 12px; border: 1px solid rgba(78, 205, 196, 0.16); background: radial-gradient(ellipse at 50% 55%, rgba(20, 60, 64, 0.6), rgba(8, 14, 22, 0.92) 70%); min-height: 300px; overflow: hidden; }
.mer-figure-label { position: absolute; top: 8px; font-size: 10px; letter-spacing: 2px; color: var(--ui-text-mute); pointer-events: none; z-index: 1; }
.mer-figure-label--yin { left: 10px; }
.mer-figure-label--yang { right: 10px; }
.mer-skin { position: absolute; inset: 6px; display: flex; align-items: center; justify-content: center; pointer-events: none; }
.mer-skin-art { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; }
.mer-skin-art > svg, .mer-skin-art > img, .mer-skin-art > canvas { width: auto; height: 100%; max-width: 100%; image-rendering: pixelated; filter: drop-shadow(0 0 10px rgba(78, 205, 196, 0.18)); opacity: 0.92; }
.mer-overlay { position: absolute; inset: 6px; width: calc(100% - 12px); height: calc(100% - 12px); }
.mer-anchor { cursor: pointer; }
.mer-ch-flow { animation: fx-draw linear infinite; }
.mer-core-orb { transform-box: fill-box; transform-origin: center; }
html[data-fx="off"] .mer-ch-flow, html[data-fx="reduced"] .mer-ch-flow { display: none; }

.mer-rail { grid-row: var(--row); display: flex; flex-direction: column; gap: 5px; justify-content: center; min-height: 0; width: 100%; text-align: left; font: inherit; color: inherit; cursor: pointer; padding: 5px 10px; border-radius: 10px; border: 1px solid var(--ui-border); border-left: 3px solid var(--c); background: var(--mer-panel-2); }
.mer-rail.is-yin { grid-column: 1; }
.mer-rail.is-yang { grid-column: 3; border-left: 1px solid var(--ui-border); border-right: 3px solid var(--c); }
.mer-rail:hover { border-color: rgba(78, 205, 196, 0.45); }
.mer-rail.is-selected { border-color: var(--c); box-shadow: 0 0 0 1px var(--c), 0 0 14px color-mix(in srgb, var(--c) 35%, transparent); background: color-mix(in srgb, var(--c) 8%, var(--mer-panel-2)); }
.mer-rail--dead { opacity: 0.55; background: repeating-linear-gradient(135deg, var(--mer-panel-2) 0 8px, #101822 8px 16px); }
.mer-rail--dormant { opacity: 0.7; }
.mer-rail-head { display: flex; align-items: center; gap: 6px; min-width: 0; }
.mer-rail-name { font-weight: 600; font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mer-rail-count { margin-left: auto; font-size: 11px; color: var(--ui-text-dim); white-space: nowrap; }
.mer-rail-track { display: flex; justify-content: space-between; align-items: center; gap: 4px; position: relative; padding: 0 2px; }
.mer-rail-track::before { content: ''; position: absolute; left: 6px; right: 6px; top: 50%; height: 2px; background: color-mix(in srgb, var(--c) 30%, transparent); transform: translateY(-50%); }
.mer-acu { position: relative; width: 12px; height: 12px; border-radius: 50%; background: #0b1620; border: 1.5px solid color-mix(in srgb, var(--c) 60%, transparent); flex: none; }
.mer-acu.is-open { background: var(--c); border-color: var(--c); box-shadow: 0 0 6px color-mix(in srgb, var(--c) 70%, transparent); }
.mer-acu.is-next { border-color: var(--c); box-shadow: 0 0 0 3px color-mix(in srgb, var(--c) 25%, transparent); }
.mer-acu.is-key { border-radius: 2px; transform: rotate(45deg); width: 12px; height: 12px; border-color: var(--mer-gold); }
.mer-acu.is-key.is-chosen { background: var(--mer-gold); }
.mer-acu.is-key.is-locked { border-color: #5c6773; }
.mer-rail--dead .mer-acu { border-color: #5c6773; background: #1a222c; box-shadow: none; }
.mer-rail-bar { height: 3px; border-radius: 2px; background: #1d2835; overflow: hidden; }
.mer-rail-bar i { display: block; height: 100%; background: var(--c); }

.mer-badge { font-size: 9px; text-transform: uppercase; letter-spacing: 0.8px; padding: 1px 6px; border-radius: 999px; border: 1px solid var(--ui-border-strong); color: var(--ui-text-dim); white-space: nowrap; }
.mer-badge--dominant { color: #fff; border-color: rgba(255, 255, 255, 0.6); }
.mer-badge--active { color: var(--mer-jade); border-color: rgba(78, 205, 196, 0.5); }
.mer-badge--strengthened { color: var(--mer-gold); border-color: rgba(255, 215, 0, 0.55); }
.mer-badge--dead { color: #ff9b9b; border-color: rgba(255, 107, 107, 0.5); }
.mer-badge--dormant { color: var(--ui-text-mute); }

.mer-side { display: flex; flex-direction: column; gap: 10px; min-width: 0; max-height: var(--mer-net-h, none); overflow-y: auto; }
.mer-card { border: 1px solid var(--ui-border-strong); border-radius: 12px; background: var(--mer-panel); padding: 10px 12px; }
.mer-card h3, .mer-preview h3 { margin: 0; font-size: 15px; color: var(--mer-title); font-family: Georgia, serif; letter-spacing: 0.3px; }
.mer-pair-icon { width: 34px; height: 34px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; border: 1px solid color-mix(in srgb, var(--c) 55%, transparent); background: color-mix(in srgb, var(--c) 12%, transparent); flex: none; }
.mer-sel-head { display: flex; gap: 10px; align-items: center; margin-bottom: 6px; }
.mer-sel-head small { font-size: 11px; color: var(--ui-text-dim); font-family: inherit; margin-left: 6px; text-transform: uppercase; letter-spacing: 1px; }
.mer-sel-head p { margin: 2px 0 0; font-size: 12px; color: var(--ui-text-dim); }
.mer-sel-head em { font-style: normal; color: var(--ui-text-mute); }
.mer-pair-line { display: flex; align-items: center; justify-content: space-between; gap: 6px; flex-wrap: wrap; margin-bottom: 6px; font-size: 12px; color: var(--ui-text-dim); }
.mer-stats { display: flex; gap: 8px; }
.mer-stat { display: inline-flex; align-items: center; gap: 3px; }
.mer-stat i { font-style: normal; font-size: 11px; color: var(--ui-text-dim); }
.mer-cmp { display: flex; flex-direction: column; gap: 2px; margin-bottom: 6px; }
.mer-cmp-row { display: grid; grid-template-columns: 18px 1fr auto 16px auto; gap: 6px; align-items: center; font-size: 12px; padding: 2px 6px; border-radius: 6px; background: var(--mer-panel-2); }
.mer-cmp-row b { font-weight: 600; }
.mer-cmp-row--up .mer-arrow, .mer-cmp-row--up .mer-after { color: var(--ui-success); }
.mer-cmp-row--down .mer-arrow, .mer-cmp-row--down .mer-after { color: var(--ui-danger); }
.mer-cmp-row--eq .mer-arrow, .mer-cmp-row--eq .mer-after { color: var(--ui-text-mute); }
.mer-progress, .mer-pool { display: flex; justify-content: space-between; gap: 4px 8px; flex-wrap: wrap; font-size: 12px; color: var(--ui-text-dim); margin-bottom: 5px; }
.mer-progress b, .mer-pool b { color: var(--ui-text); }
.mer-pool em { font-style: normal; color: var(--mer-jade); }
.mer-pool { margin-bottom: 6px; }
.mer-side #mer-open-btn { position: sticky; bottom: 0; z-index: 2; box-shadow: 0 -6px 12px var(--mer-panel); background-color: #1b1a12; }
.mer-progress-bar { height: 5px; border-radius: 3px; background: #1d2835; overflow: hidden; margin-bottom: 6px; }
.mer-progress-bar i { display: block; height: 100%; }
.mer-gate { margin: 0 0 8px; padding: 6px 10px; border-radius: 8px; background: var(--ui-gold-dim); color: #f5e6b0; font-size: 12px; text-align: center; }
.mer-dead-note { margin: 0 0 10px; padding: 8px 10px; border-radius: 8px; background: var(--ui-danger-dim); color: #ffb4b4; font-size: 12px; }

.mer-key { display: flex; align-items: center; gap: 8px; margin-top: 10px; padding: 8px 10px; border-radius: 8px; border: 1px dashed rgba(255, 215, 0, 0.35); font-size: 12px; color: var(--ui-text-dim); }
.mer-key b { color: var(--ui-text); }
.mer-key--chosen { border-style: solid; color: var(--mer-title); }
.mer-key--locked { border-color: var(--ui-border-strong); }
.mer-key-diamond { width: 10px; height: 10px; transform: rotate(45deg); background: var(--mer-gold); flex: none; }
.mer-key-diamond.is-empty { background: transparent; border: 1.5px solid var(--mer-gold); }
.mer-keychoice { margin-top: 10px; padding: 10px; border-radius: 10px; border: 1px solid rgba(255, 215, 0, 0.5); background: rgba(255, 215, 0, 0.04); }
.mer-keychoice-head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 8px; color: var(--mer-title); }
.mer-keychoice-head small { color: var(--ui-text-dim); width: 100%; padding-left: 18px; }
.mer-kcards { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.mer-kcard { border: 1px solid rgba(255, 215, 0, 0.35); border-radius: 8px; padding: 8px; background: var(--mer-panel-2); display: flex; flex-direction: column; gap: 4px; }
.mer-kcard h4 { margin: 0; font-size: 13px; color: var(--mer-gold); text-align: center; }
.mer-kcard p { margin: 0; font-size: 12px; line-height: 1.35; }
.mer-kcard .up { color: #7ee2a0; }
.mer-kcard .down { color: #ff9b9b; }
.mer-kcard .eq { color: var(--ui-text-mute); }
.mer-kcard .mer-btn { margin-top: auto; }

.mer-circuit { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 10px 16px; border-top: 1px solid var(--mer-line); background: rgba(10, 18, 28, 0.7); }
.mer-circuit > div { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px; }
.mer-circuit-title { font-size: 15px; color: var(--ui-text-dim); }
.mer-circuit-title b, .mer-circuit-sub b { color: var(--mer-jade); }
.mer-circuit-sub { font-size: 13px; color: var(--ui-text-dim); }
.mer-circuit-bar { display: inline-flex; gap: 4px; }
.mer-circuit-bar i { width: 34px; height: 6px; border-radius: 3px; background: #1d2835; }
.mer-circuit-bar i.on { background: var(--mer-jade); box-shadow: 0 0 6px rgba(78, 205, 196, 0.6); }

.mer-preview { border: 1px solid var(--mer-line); border-radius: 12px; background: var(--mer-panel); padding: 12px 14px; color: var(--ui-text); }
.mer-preview-top { display: flex; gap: 12px; align-items: center; }
.mer-shape-text { min-width: 0; }
.mer-preview .mer-path-title { font-size: 17px; }
.mer-preview .mer-path-sentence { margin: 4px 0 8px; line-height: 1.45; font-size: 13px; }
.mer-preview .mer-utils { margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--ui-border); }
.mer-preview-hint { margin: 0 0 6px; font-size: 12px; color: var(--ui-text-dim); }
.mer-prev-pairs { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; margin-top: 10px; }
.mer-prev-pair { display: inline-flex; align-items: center; gap: 5px; padding: 4px 8px; border-radius: 8px; border: 1px solid color-mix(in srgb, var(--c) 45%, transparent); background: var(--mer-panel-2); font-size: 12px; }
.mer-prev-pair em { font-style: normal; font-size: 10px; text-transform: uppercase; letter-spacing: 0.6px; color: var(--ui-text-dim); }
.mer-prev-pair--dead { opacity: 0.55; border-style: dashed; }
.mer-prev-pair--dormant { opacity: 0.7; }
.mer-prev-pair--strengthened em { color: var(--mer-gold); }
.mer-prev-pair--dominant em { color: #fff; }
#rebirthMeridianPreview:not(:empty) { margin-top: 12px; }

.mer-auto-config { display: flex; flex-direction: column; gap: 8px; }
.mer-lean-row { display: grid; grid-template-columns: 96px auto minmax(0, 1fr) auto; gap: 8px; align-items: center; }
.mer-lean-name { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; }
.mer-lean-end { font-size: 11px; color: var(--ui-text-dim); text-transform: uppercase; }
.mer-policy { display: flex; justify-content: center; align-items: center; gap: 8px; margin-top: 6px; font-size: 13px; }
.mer-policy select { background: var(--ui-bg); color: var(--ui-text); border: 1px solid var(--ui-border-strong); border-radius: 6px; padding: 4px 8px; }
.mer-auto-hint { margin: 4px 0 0; font-size: 12px; color: var(--ui-text-dim); text-align: center; }

.wm-root-panel .mer-head h2 { display: none; }
.dantian-meridian-link { align-self: center; margin: 6px auto 0; padding: 7px 14px; min-height: 34px; border-radius: 8px; border: 1px solid rgba(78, 205, 196, 0.5); background: rgba(78, 205, 196, 0.08); color: var(--ui-teal); font: inherit; font-size: 13px; font-weight: 600; cursor: pointer; }
.dantian-meridian-link:hover { background: rgba(78, 205, 196, 0.16); border-color: var(--ui-teal); }

.mer-screen.is-compact .mer-head { padding: 5px 12px; }
.mer-screen.is-compact .mer-strip { padding: 4px 12px; }
.mer-screen.is-compact .mer-strip .mer-path-sentence, .mer-screen.is-compact .mer-strip-label { display: none; }
.mer-screen.is-compact .mer-strip .mer-wuxing { width: 40px; }
.mer-screen.is-compact .mer-main { padding: 6px 10px; }
.mer-screen.is-compact .mer-network { gap: 4px 10px; }
.mer-screen.is-compact .mer-rail { flex-direction: row; align-items: center; gap: 8px; padding: 3px 8px; }
.mer-screen.is-compact .mer-rail-head { flex: 0 0 auto; max-width: 52%; }
.mer-screen.is-compact .mer-rail-head .mer-icon, .mer-screen.is-compact .mer-rail-count { display: none; }
.mer-screen.is-compact .mer-rail-name { font-size: 11px; }
.mer-screen.is-compact .mer-rail-track { flex: 1; gap: 2px; }
.mer-screen.is-compact .mer-acu { width: 9px; height: 9px; }
.mer-screen.is-compact .mer-rail-bar, .mer-screen.is-compact .mer-rail-head .mer-badge { display: none; }
.mer-screen.is-compact .mer-figure { min-height: 0; }
.mer-screen.is-compact .mer-circuit { padding: 6px 12px; }

@media (max-width: 1279px) {
    .mer-main { grid-template-columns: 1fr; }
    .mer-side { max-height: none; overflow: visible; }
    .mer-selected { scroll-margin-top: 12px; scroll-margin-bottom: 96px; }
}

@media (max-width: 900px) {
    .mer-network { grid-template-columns: 1fr 1fr; grid-template-rows: auto; gap: 8px; height: auto; }
    .mer-strip { grid-template-columns: auto minmax(0, 1fr); }
    .mer-strip-values { grid-column: 1 / span 2; }
    .mer-figure { grid-column: 1 / span 2; grid-row: 1; min-height: 240px; height: 36vh; }
    .mer-rail { grid-row: var(--row-m); padding: 7px 8px; }
    .mer-rail.is-yang { grid-column: 2; }
}

@media (max-width: 600px) {
    .mer-screen { margin: 0; border-radius: 0; border-left: 0; border-right: 0; }
    .mer-head { padding: 8px 10px; gap: 8px; }
    .mer-head-actions .mer-btn { display: none; }
    .mer-chips { order: 3; flex-basis: 100%; }
    .mer-chip { font-size: 12px; padding: 5px 9px; }
    .mer-strip { padding: 8px 10px; }
    .mer-strip .mer-wuxing { width: 56px; }
    .mer-main { padding: 8px; gap: 8px; }
    .mer-network { gap: 6px; }
    .mer-acu { width: 10px; height: 10px; }
    .mer-rail-name { font-size: 12px; }
    .mer-rail-head .mer-badge { display: none; }
    .mer-circuit { position: sticky; bottom: 0; z-index: 25; padding: 10px 12px; background: #0c141e; box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.5); }
    .mer-circuit .mer-btn { white-space: nowrap; padding: 8px 12px; }
    .mer-circuit-title { font-size: 13px; }
    .mer-circuit-bar i { width: 22px; }
    .mer-btn { min-height: 44px; }
    .mer-kcards { grid-template-columns: 1fr; }
    .mer-lean-row { grid-template-columns: 1fr; }
    .mer-preview-top { flex-direction: column; align-items: stretch; }
    .mer-preview .mer-wuxing { width: 130px; align-self: center; }
}