/* 04 ledger — 烧钱波形环境层 + 脱壳 hairline 网格 */
#s4 .inner { position:relative; }
.burn-wave { position:absolute; inset:0; width:100%; height:100%; z-index:0; pointer-events:none; }
#s4 .eyebrow,#s4 h2,#s4 .lead,.ledger-board { position:relative; z-index:1; }
.ledger-board { display:grid; grid-template-columns:minmax(360px,38%) 1fr; gap:clamp(28px,4vw,64px); margin-top:26px; }
.ledger-dial,.ledger-lines { border-top:1px solid rgba(255,179,38,.28); background:transparent; }
.ledger-dial { display:grid; place-items:center; padding:34px 0 0; text-align:center; }
.ledger-dial svg { width:100%; max-width:270px; overflow:visible; }
.dial-track,.dial-progress { fill:none; stroke-linecap:round; stroke-width:8; }
.dial-track { stroke:rgba(245,242,234,.08); stroke-dasharray:2 10; }
.dial-progress { stroke:var(--gold); stroke-dasharray:270; stroke-dashoffset:270; filter:drop-shadow(0 0 8px rgba(255,176,46,.25)); transition:stroke-dashoffset 900ms cubic-bezier(.25,1,.5,1); }
.dial-needle { stroke:var(--ink); stroke-width:2; transform-origin:110px 116px; transition:transform 900ms var(--ease-back); }
.dial-pin { fill:var(--gold); }
.ledger-dial strong { font-family:var(--mono); font-size:2.2rem; font-weight:700; }
.ledger-dial span { color:var(--muted); font-size:.85rem; }
.ledger-lines { display:grid; padding:0 0 0; }
.ledger-lines div { display:flex; justify-content:space-between; gap:20px; padding:22px 0; border-bottom:1px solid var(--line); }

/* 成本算式展示 */
.cost-formula { font-family:var(--mono); font-size:clamp(1.35rem,3vw,2.2rem); font-weight:700; text-align:center; letter-spacing:.01em; color:var(--ink); margin:clamp(28px,4.5vh,48px) 0 clamp(8px,1.5vh,16px); font-variant-numeric:tabular-nums; }
.cost-formula .cf-dim { color:var(--muted); font-weight:400; }
.cost-formula .cf-eq { color:var(--faint); margin:0 .35em; font-weight:400; }
.cost-formula .cf-out { color:var(--gold); text-shadow:0 0 32px rgba(255,176,46,.35); }
.cost-formula .cf-per { font-size:.55em; color:var(--muted); font-weight:400; margin-left:.2em; }
.ledger-lines span { color:#b3aea2; }
.ledger-lines strong { font-family:var(--mono); font-size:2rem; font-weight:700; font-variant-numeric:tabular-nums; }
.cur { font-size:.72em; margin-right:2px; color:var(--muted); }
.loss strong { color:color-mix(in srgb,var(--red) 80%,var(--ink)); }
.loss.gain strong { color:var(--gold); text-shadow:0 0 28px rgba(255,176,46,.35); }
#finance-note { align-self:end; margin:14px 0 6px; color:rgba(245,242,234,.55); font-size:.82rem; }
@media (max-width:980px) { .ledger-board { grid-template-columns:1fr; } .ledger-dial { padding:20px; gap:16px; } .ledger-dial svg { max-width:220px; } }