:root {
  --ink: #11120f;
  --paper: #f3f0e8;
  --card: #fffdf8;
  --acid: #c8ff2e;
  --muted: #73756d;
  --line: rgba(17,18,15,.14);
  --shadow: 0 24px 70px rgba(28, 30, 22, .12);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: var(--paper);
  font-family: Manrope, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}
button, input { font: inherit; }
button { color: inherit; }
.noise {
  position: fixed; inset: 0; pointer-events: none; opacity: .035; z-index: 10;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.88' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.6'/%3E%3C/svg%3E");
}
.shell { width: min(1240px, calc(100% - 48px)); margin: 0 auto; padding-bottom: 34px; }
.topbar { height: 96px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 12px; color: inherit; text-decoration: none; }
.brand-mark { width: 40px; height: 40px; border-radius: 50%; background: var(--ink); color: var(--acid); display: grid; place-items: center; font: 500 20px/1 "DM Mono", monospace; }
.brand strong, .brand small { display: block; letter-spacing: .13em; }
.brand strong { font-size: 12px; }
.brand small { margin-top: 3px; color: var(--muted); font-size: 8px; font-weight: 700; }
.status { display: flex; align-items: center; gap: 8px; font: 500 10px/1 "DM Mono", monospace; letter-spacing: .1em; }
.status i { width: 7px; height: 7px; border-radius: 50%; background: #54c65c; box-shadow: 0 0 0 4px rgba(84,198,92,.13); }
.status span { color: var(--muted); }
.hero { padding: 68px 0 52px; display: grid; grid-template-columns: 1.35fr .65fr; align-items: end; gap: 44px; }
.eyebrow { margin: 0 0 17px; font: 500 11px/1 "DM Mono", monospace; letter-spacing: .16em; }
h1 { margin: 0; font-size: clamp(52px, 6vw, 84px); line-height: .91; letter-spacing: -.065em; font-weight: 700; }
h1 em { font-style: normal; color: transparent; -webkit-text-stroke: 1.5px var(--ink); }
.intro { max-width: 610px; margin: 25px 0 0; color: var(--muted); font-size: 14px; line-height: 1.75; }
.rules { display: grid; grid-template-columns: repeat(3,1fr); border: 1px solid var(--line); border-radius: 16px; overflow: hidden; background: rgba(255,255,255,.24); }
.rules div { padding: 22px 14px; text-align: center; }
.rules div + div { border-left: 1px solid var(--line); }
.rules span { display: block; font: 500 26px/1 "DM Mono", monospace; }
.rules small { display: block; margin-top: 9px; color: var(--muted); font-size: 9px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.price-modes { width: fit-content; margin: 0 0 14px auto; padding: 4px; display: flex; gap: 4px; border: 1px solid var(--line); border-radius: 13px; background: rgba(255,255,255,.35); }
.price-modes button { min-width: 170px; padding: 12px 17px; border: 0; border-radius: 9px; background: transparent; text-align: left; cursor: pointer; transition: .18s ease; }
.price-modes button span { display: block; color: var(--muted); font: 500 8px/1 "DM Mono", monospace; letter-spacing: .11em; }
.price-modes button strong { display: block; margin-top: 6px; font-size: 12px; }
.price-modes button.active { background: var(--ink); color: white; box-shadow: 0 7px 18px rgba(17,18,15,.15); }
.price-modes button.active span { color: var(--acid); }
.price-modes button:not(.active):hover { background: rgba(255,255,255,.7); }
.consignment-note { margin: 0 0 14px auto; width: fit-content; padding: 10px 14px; border: 1px solid rgba(17,18,15,.18); border-radius: 9px; background: var(--acid); color: var(--ink); font: 500 10px/1.4 "DM Mono", monospace; }
.consignment-note strong { margin-right: 7px; letter-spacing: .08em; }
.workspace { display: grid; grid-template-columns: minmax(290px,.72fr) minmax(0,1.55fr); background: var(--card); border: 1px solid var(--line); border-radius: 22px; overflow: hidden; box-shadow: var(--shadow); }
.input-panel, .results-panel { padding: 36px; }
.input-panel { background: var(--ink); color: white; }
.panel-head { display: flex; align-items: center; gap: 12px; margin-bottom: 37px; }
.panel-head > span { width: 28px; height: 28px; border: 1px solid currentColor; border-radius: 50%; display: grid; place-items: center; font: 500 9px/1 "DM Mono", monospace; opacity: .55; }
.panel-head h2 { margin: 0; font-size: 14px; letter-spacing: -.01em; }
.panel-head > p { margin: 0 0 0 auto; color: var(--muted); font: 500 9px/1 "DM Mono", monospace; text-transform: uppercase; letter-spacing: .08em; }
.input-panel label { display: flex; justify-content: space-between; margin-bottom: 9px; color: #b3b5ad; font: 500 9px/1 "DM Mono", monospace; letter-spacing: .13em; }
.input-panel label span { color: var(--acid); }
.money-input { display: flex; align-items: center; gap: 13px; border-bottom: 1px solid #555750; padding: 3px 0 12px; transition: border-color .2s; }
.money-input:focus-within { border-color: var(--acid); }
.money-input b { color: var(--acid); font: 500 12px/1 "DM Mono", monospace; }
.money-input input { width: 100%; border: 0; outline: 0; background: transparent; color: white; font: 500 clamp(34px,4vw,52px)/1 "DM Mono", monospace; letter-spacing: -.06em; }
.money-input input::placeholder { color: #4c4e48; }
.hint { margin: 13px 0 27px; color: #85877f; font-size: 10px; }
.quick-values { display: grid; grid-template-columns: repeat(4,1fr); gap: 6px; }
.quick-values button { border: 1px solid #40423d; border-radius: 8px; background: transparent; color: #a9aba3; padding: 10px 4px; font: 500 10px/1 "DM Mono", monospace; cursor: pointer; transition: .18s ease; }
.quick-values button:hover { color: var(--ink); background: var(--acid); border-color: var(--acid); transform: translateY(-1px); }
.clear { width: 100%; margin-top: 42px; border: 0; background: transparent; color: #7d8077; text-decoration: underline; text-underline-offset: 4px; font-size: 10px; cursor: pointer; }
.clear:hover { color: white; }
.results-panel { background: var(--card); }
.primary-result { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 28px 29px; border: 1px solid var(--ink); border-radius: 15px; background: var(--acid); }
.primary-result p, .primary-result span, .result-title span { margin: 0; font: 500 9px/1.2 "DM Mono", monospace; letter-spacing: .1em; }
.primary-result h3 { margin: 13px 0 9px; font: 500 clamp(34px,5vw,56px)/1 "DM Mono", monospace; letter-spacing: -.055em; }
.primary-result > div > span { opacity: .55; }
.copy { flex: 0 0 auto; width: 72px; height: 72px; border: 1px solid rgba(17,18,15,.25); border-radius: 50%; background: rgba(255,255,255,.28); display: grid; place-items: center; gap: 2px; cursor: pointer; transition: .18s; }
.copy svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.5; }
.copy span { font-size: 8px; }
.copy:not(:disabled):hover { background: var(--ink); color: var(--acid); transform: scale(1.03); }
.copy:disabled, .icon-copy:disabled { cursor: default; opacity: .35; }
.result-grid { margin-top: 12px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.result-grid article { min-height: 130px; padding: 21px 22px; border: 1px solid var(--line); border-radius: 13px; background: white; }
.result-grid article.wide { grid-column: 1/-1; min-height: 116px; background: #1b1c18; color: white; }
.result-title { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.result-grid strong { display: block; margin-top: 27px; font: 500 clamp(23px,3vw,33px)/1 "DM Mono", monospace; letter-spacing: -.045em; }
.result-grid small { display: block; margin-top: 9px; color: var(--muted); font-size: 9px; }
.icon-copy { border: 0; background: transparent; padding: 0; color: var(--muted); font: 500 8px/1 "DM Mono", monospace; text-transform: uppercase; cursor: pointer; }
.icon-copy:not(:disabled):hover { color: var(--ink); text-decoration: underline; }
.wide .icon-copy:not(:disabled):hover { color: var(--acid); }
.check-line { display: flex; justify-content: space-between; gap: 16px; margin-top: 18px; padding: 0 2px; color: var(--muted); font-size: 10px; }
.check-line b { color: var(--ink); font-weight: 700; }
.formula-strip { margin-top: 18px; padding: 22px 28px; border: 1px solid var(--line); border-radius: 14px; display: flex; align-items: center; justify-content: space-between; gap: 26px; }
.formula-strip div { flex: 1; }
.formula-strip span { color: var(--muted); font: 500 8px/1 "DM Mono", monospace; letter-spacing: .12em; }
.formula-strip p { margin: 7px 0 0; font-size: 11px; font-weight: 700; }
.formula-strip i { color: #a3a59e; font-style: normal; }
footer { display: flex; justify-content: space-between; gap: 24px; padding: 25px 2px 0; color: var(--muted); font-size: 9px; }
footer p { margin: 0; }
#toast { position: fixed; left: 50%; bottom: 28px; z-index: 20; transform: translate(-50%,18px); border-radius: 999px; padding: 11px 18px; background: var(--ink); color: white; font: 500 10px/1 "DM Mono", monospace; opacity: 0; pointer-events: none; transition: .2s ease; }
#toast.show { opacity: 1; transform: translate(-50%,0); }
@media (max-width: 850px) {
  .hero { grid-template-columns: 1fr; padding-top: 48px; }
  .rules { max-width: 520px; }
  .workspace { grid-template-columns: 1fr; }
  .input-panel, .results-panel { padding: 30px; }
  .formula-strip { align-items: flex-start; }
}
@media (max-width: 560px) {
  .shell { width: min(100% - 24px,1240px); }
  .topbar { height: 78px; }
  .status span { display: none; }
  .hero { padding: 38px 2px 34px; gap: 30px; }
  h1 { font-size: clamp(47px,15vw,66px); }
  .intro { font-size: 12px; }
  .rules span { font-size: 21px; }
  .rules div { padding: 18px 7px; }
  .rules small { font-size: 7px; }
  .price-modes { width: 100%; margin-bottom: 10px; }
  .price-modes button { min-width: 0; flex: 1; padding: 11px 12px; }
  .price-modes button strong { font-size: 10px; }
  .consignment-note { width: 100%; }
  .input-panel, .results-panel { padding: 24px 20px; }
  .panel-head { margin-bottom: 30px; }
  .panel-head > p { display: none; }
  .primary-result { padding: 23px 20px; }
  .primary-result h3 { font-size: 33px; }
  .copy { width: 58px; height: 58px; }
  .result-grid { grid-template-columns: 1fr; }
  .result-grid article.wide { grid-column: auto; }
  .formula-strip { flex-direction: column; gap: 17px; }
  .formula-strip i { transform: rotate(90deg); }
  footer { flex-direction: column; line-height: 1.5; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; } }